RGA SERIES - American Control Electronics

RGA SERIES - American Control Electronics
RG A S E RI ES
USER MANUAL
RGA400 -3
RGA400 -10
RGA403 -3
RGA403 -10
RGA440 -3
RGA440 -10
www.americancontrolelectronics.com
Dear Valued Consumer:
Congratulations on your purchase of the RGA Series drive.
This User Manual was created for you to get the most out of
your new device and assist with the initial setup. Please visit
www.americancontrolelectronics.com to learn more about our
other drives.
Thank you for choosing American Control Electronics!
No part of this document may be reproduced or transmitted in any form without written permission
from American Control Electronics®. The information and technical data in this document are
subject to change without notice. American Control Electronics® makes no warranty of any kind with
respect to this material, including, but not limited to, the implied warranties of its merchantability
and fitness for a given purpose. American Control Electronics® assumes no responsibility for any
errors that may appear in this document and makes no commitment to update or to keep current
the information in this document.
RGA Series
Safety First!
SAFETY WARNINGS

!
WARNING!
Text in gray boxes denote important safety tips or warnings.
Please read these instructions carefully before performing any of
the procedures contained in this manual.
• DO NOT INSTALL, REMOVE, OR REWIRE THIS EQUIPMENT WITH
POWER APPLIED. Have a qualified electrical technician install, adjust
and service this equipment. Follow the National Electrical Code
and all other applicable electrical and safety codes, including the
provisions of the Occupational Safety and Health Act (OSHA), when
installing equipment.
• Reduce the chance of an electrical fire, shock, or explosion by using
proper grounding techniques, over-current protection, thermal
protection, and enclosure. Follow sound maintenance procedures.

!
WARNING!
It is possible for a drive to run at full speed as a result of a
component failure. American Control Electronics (ACE) strongly
recommends the installation of a master switch in the main
power input to stop the drive in an emergency.
Circuit potentials are at 115 VAC or 230 VAC above earth ground.
Avoid direct contact with the printed circuit board or with circuit
elements to prevent the risk of serious injury or fatality. Use a
non-metallic screwdriver for adjusting the calibration trim pots.
Use approved personal protective equipment and insulated tools
if working on this drive with power applied.
i
RGA Series
Table of Contents
Section 1. Regenerative Drives............................................. 1
Section 2. Specifications...................................................... 2
Section 3. Dimensions.. ........................................................ 4
Section 4. Installation. . ........................................................ 8
Heat Sinking.................................................................................. 8
Chassis. . ................................................................................. 8
NEMA 4X............................................................................... 8
Mounting...................................................................................... 9
Chassis.................................................................................. 9
Speed Adjust Potentiometer.. ........................................10
NEMA 4X..............................................................................11
Wiring..........................................................................................12
Shielding Guidelines.............................................................13
Line Fusing...........................................................................14
Connections.................................................................................16
Power Inputs........................................................................16
Motor.. .................................................................................16
Field Output Connections. . ....................................................17
Speed Adjust Potentiometer. . ................................................18
Speed Adjust Potentiometer (RGA403 models).......................19
Analog Input Signal...............................................................20
Analog Input Signal (RGA403 models)....................................21
+15 and -15..........................................................................22
Enable, Regen Brake, Inhibit..................................................22
Direction Switch...................................................................22
Tachogenerator Feedback . . ....................................................23
ii
RGA Series
Section 5. Operation. . ........................................................ 27
Before Applying Power..................................................................27
Select Switches.............................................................................28
Input Voltage Select (SW501, SW502)....................................28
Armature Voltage Select (SW503)..........................................28
Feedback Select (SW504)......................................................28
Signal Select (SW501) (RGA403 models). . ...............................29
Input Voltage Select (SW502) (RGA403 models).. ....................29
Startup (Chassis models)...............................................................30
Startup (NEMA 4X models)............................................................31
Starting and Stopping Methods.....................................................32
Automatic Restart Upon Power Restoration...........................32
Line Starting and Stopping....................................................32
Regenerative Brake to Zero Speed (INHIBIT Terminals). . ..........33
Regenerative Decel to Zero Speed (RB1 and RB2 Terminals)....34
Regenerative Decel to Minimum Speed..................................35
Coast to Zero Speed (INHIBIT-RUN)........................................36
Section 6. Calibration........................................................ 37
Minimum Speed (MIN SPD)...........................................................37
Maximum Speed (MAX SPD)..........................................................38
Forward Torque (FWD TQ).............................................................39
Reverse Torque (REV TQ)...............................................................40
IR Compensation (IR COMP)..........................................................41
Forward Acceleration (FWD ACC)...................................................43
Reverse Acceleration (REV ACC). . ...................................................43
Deadband. . ...................................................................................44
Tachogenerator (TACH). . ................................................................45
-MIN OUT, MAX OUT, and SIGNAL INPUT ADJUST (-RGA403
models)........................................................................................46
iii
RGA Series
Section 7.Application Notes................................................ 48
Direction Switch...........................................................................48
Multiple Fixed Speeds...................................................................49
Adjustable Speeds Using Potentiometers In Series . . ........................50
Independent Adjustable Speeds.. ...................................................51
Independent Adjustable Forward and Reverse Speeds....................52
RUN/JOG Switch - Inhibit Connection. . ...........................................53
RUN/JOG Switch - Potentiometer Connection. . ...............................54
Leader-Follower Application..........................................................55
Single Speed Potentiometer Control Of Multiple Drives..................56
Section 8. Troubleshooting. . ............................................... 57
Before Troubleshooting.................................................................57
Section 9. Accessories & Replacement Parts........................ 60
Notes................................................................................ 61
Unconditional Warranty.. .................................................... 62
iv
RGA Series
List of Tables
Table 1
Table 2
Table 3
Recommended Line Fuse Sizes...........................................15
Short Circuit Current Ratings.............................................15
Field Output Connections..................................................17
v
RGA Series
List of Figures
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
vi
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Four Quadrant Operation................................................... 1
RGA400 Dimensions........................................................... 4
RGA403 Dimensions........................................................... 5
RGA440 Dimensions........................................................... 6
HSK-0003 Dimensions . . ....................................................... 7
Speed Adjust Potentiometer..............................................10
Speed Adjust Potentiometer Connections.. .........................18
RGA403 Speed Adjust Potentiometer Connections..............19
Analog Input Signal Connections. . ......................................20
RGA403 Analog Input Signal Connections...........................21
RGA400 Connections.........................................................24
RGA403 Connections.........................................................25
RGA440 Connections.........................................................26
Select Switches.................................................................28
SW501 Settings.................................................................29
RGA403 Select Switches....................................................29
Inhibit Terminals...............................................................33
Run/Decelerate to Minimum Speed Switch. . .......................35
Inhibit-Run Terminal Location and Run/Coast Switch..........36
Recommended FWD TQ , REV TQ , and IR COMP Settings......42
Deadband Settings............................................................44
Forward-Reverse Switch....................................................48
Forward-Stop-Reverse Switch............................................48
Multiple Fixed Speeds.......................................................49
Adjustable Speeds Using Potentiometers in Series..............50
Independent Adjustable Speeds. . .......................................51
Independent Adjustable Forward and Reverse Speeds.. .......52
Independent Adjustable Forward and Reverse Speeds with
Stop.................................................................................52
RGA Series
Figure
Figure
Figure
Figure
29
30
31
32
RUN/JOG Switch - Inhibit Connection ................................53
RUN/JOG Switch - Speed Adjust Potentiometer Connection.. 54
Leader-Follower Application..............................................55
Single Speed Potentiometer Control of Multiple Drives. . .....56
vii
RGA Series
Section 1. Regenerative Drives
Most
non-regenerative,
variable speed, DC drives
control current flow to a
motor in one direction.
The direction of current
flow is the same direction
as the motor rotation.
Non-regenerative drives
operate in Quadrant I,
and also in Quadrant III if
the drive is reversible (see
Figure 1). Motors must stop
before reversing direction.
Unless dynamic braking
is used, non regenerative
drives cannot decelerate a
load faster than coasting to a
lower speed.
Quadrant II
Quadrant I
Quadrant III
Quadrant IV
MOTOR
ROTATION
MOTOR
TORQUE
NOTE: ARROWS IN SAME DIRECTION = MOTOR ACTION
ARROWS IN OPPOSITE DIRECTION = REGENERATIVE ACTION
Regenerative drives operate
in two additional quadrants:
Quadrant II and Quadrant
Figure 1. Four Quadrant Operation
IV. In these quadrants,
motor torque is in the
opposite direction of motor rotation.
This allows regenerative drives to reverse a motor without contractors
or switches, to control an overhauling load, and to decelerate a load
faster than it would to coast to a lower speed.
1
RGA Series
Section 2. Specifications
Maximum
Armature
Current (ADC)
HP Range
with 90 VDC
Motor
HP Range
with 180 VDC
Motor
RGA400-3
RGA403-3
RGA440-3
3.0
1/20 - 1/4
1/10 - 1/2
Chassis
Chassis
NEMA 4X
RGA400-10*
RGA403-10*
RGA440-10
10.0
1/8 - 1
1/4 - 2
Chassis
Chassis
NEMA 4X
Model
Enclosure
* Heat sink kit part number HSK-0003 must be used when the continuous
current output is over 7 amps.
AC Line Voltage
115/230 VAC ± 10% 50/60 Hz, single phase
DC Armature Voltage
with 115 VAC Line Voltage
with 230 VAC Line Voltage
0 - 90 VDC
0 - 180 VDC
Field Voltage
with 115 VAC Line Voltage
with 230 VAC Line Voltage
50 VDC (F1 to L1); 100 VDC (F1 to F2)
100 VDC (F1 to L1); 200 VDC (F1 to F2)
Maximum Field Current
1 ADC
Acceleration Time Range
0.5 - 15 seconds
Deceleration Time Range
0.5 - 15 seconds
Analog Input Range
RGA400 / RGA440 models
(signal must be isolated; RB1 to S2)
Voltage Signal Range
RGA403 models
Voltage Signal Range
Current Signal Range
0 to ± 10 VDC
0 to ± 250 VDC
4 - 20 mA
2
RGA Series
Input Impedance
RGA400 / RGA440 models (RB1 to S2)
-RGA403 models (Voltage Signal)
-RGA403 models (1-5 mA Signal)
-RGA403 models (4-20 mA Signal)
-RGA403 models (10-50 mA Signal)
Form Factor
Load Regulation
with Armature Feedback
with Tachogenerator Feedback
Vibration
Safety Certification
Ambient Temperature Range
Chassis models
Enclosed models
3
32K ohms
>25K ohms
1K ohms
235 ohms
100 ohms
1.37 at base speed
1% base speed or better
0.1% base speed
0.5G maximum (0 - 50 Hz)
0.1G maximum (> 50 Hz)
UL Recognized Component, File # E132235
CSA Certified Component, File # LR41380
10°C - 55°C
10°C - 40°C
RGA Series
Section 3. Dimensions
0.19 [5]
R503
P509
TACH
C506
SW504
R505
T504
P505
SCR504
P503
REV TQ
P504
IR COMP
T503
SCR505
8.90 [228]
MAX SPD
R504
SCR506
P506
FWD ACC
SCR507
P507
REV ACC
DB
P508
C507
C508
SW503
R506
SCR508
C509
C510
R502
FEEDBACK
ARMATURE
TACH
180 ARM
90
P502
P501
MIN SPD
SCR503
FWD TQ
T502
C501
SO501
R501
SO502
T2
INH-RUN
SCR501
INHIBIT
SCR502
T501
T1
T505
115
S0 RB1 RB2
230
115
L2
SW501
C503
S1
230
FAST ACTING
FUSES ONLY
L1
IC501
-15 +15
C502
SW502
FU501 FU502
IC502
S2
8.40 [213]
S3
TB501
C504
TB502
C505
L1
L2
230V
L2
115V
GND F1
F2
A2
A1
3.50 [89]
4.78 [121]
1.85 [47]
0.92 [23]
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Figure 2. RGA400 Dimensions
4
RGA Series
TACH
POL REV
1-5mA
4-20mA
10-50mA
SW501
IR COMP
+15
IC504
C505
C508
C507
C501
C502
C503
FWD TQ
L2
8.90 [226]
REV TQ
-15
C504
IC503
C506
IC501
IC502
MAX SPD
COM
FWD ACC
INPUT 1
REV ACC
INPUT 2
DB
TP
SIGNAL
INPUT
ADJUST
P501
R501
1 2 3
P502
P503
MIN
OUT
MAX
OUT
IC505
COM
0.19 [5]
MIN SPD
L1
OUT 2
T2
SCR501
INH
OUT 1
T501
INPUT VOLTAGE SELECT
115
230
SW502
8.40 [213]
T1
T505
115
SW501
C503
IC502
S2
115
L2
S1
230
FAST ACTING
FUSES ONLY
S0 RB1 RB2
230
FU501 FU502
L1
IC501
-15 +15
C502
SW502
S3
TB501
C504
TB502
C505
L1
L2
230V
L2
115V
GND F1
F2
A2
A1
3.50 [89]
4.78 [121]
3.07 [78]
1.85 [47]
0.92 [23]
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Figure 3. RGA403 Dimensions
5
RGA Series
6.90 [175]
6.30 [160]
1.40
[36]
10.22
[260]
BRAKE
9.80
[249]
REVERSE
FORWARD
7.00
[178]
0.22
[6]
1.45 [37]
5.51
[140]
4.78
[121]
2.31
[59]
0.12
[3]
1.50 [38]
1.50 [38]
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Figure 4. RGA440 Dimensions
6
RGA Series
6.90 [175]
6.60 [168]
0.3 [8]
1.375 [35]
8.375 [213]
9.78 [249]
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Figure 5. HSK-0003 Dimensions
7
RGA Series
Section 4. Installation

!
WARNING!
Do not install, rewire, or remove this control with input power
applied. Failure to heed this warning may result in fire, explosion,
or serious injury. Make sure you read and understand the Safety
Precautions on page i before attempting to install this product.
Heat Sinking
Chassis
Models RGA400-10 and RGA403-10 require an additional heat sink
when the continuous armature current is above 7 amps. Use heat sink
kit part number HSK-0001. All other chassis drives have sufficient heat
sinking in their basic configuration. Use a thermally conductive heat sink
compound (such as Dow Corning® 340 Heat Sink Compound) between
the chassis and the heat sink surface for optimum heat transfer.
NEMA 4X
All NEMA 4X models come with the heat sink already attached.
Therefore, all NEMA 4X drives have sufficient heat sinking in their basic
configuration.
8
RGA Series
Mounting
Chassis
• Drive components are sensitive to electrostatic discharge. Avoid
direct contact with the circuit board. Hold the drive by the heat sink
only.
• Protect the drive from dirt, moisture, and accidental contact.
• Provide sufficient room for access to the terminals and calibration
trim pots.
• Mount the drive away from heat sources. Operate the drive within
the specified ambient operating temperature range.
• Prevent loose connections by avoiding excessive vibration of the
drive.
• Mount the drive with its board in either a horizontal or vertical
plane. Six 0.19” (5 mm) wide slots in the chassis accept #8 pan head
screws. Fasten either the large base or the narrow flange of the
chassis to the subplate.
• The chassis should be earth grounded. Use a star washer beneath
the head of at least one of the mounting screws to penetrate the
anodized surface and to reach bare metal.
9
RGA Series
Speed Adjust Potentiometer

!
WARNING!
Be sure that the potentiometer tabs do not make contact with the
potentiometer’s body. Grounding the input will cause damage to
the drive.
If using a remote potentiometer with a chassis drive, mount the speed
adjust potentiometer through a 0.38 in. (10 mm) hole with the hardware
provided (Figure 6). Install the circular insulating disk between the panel
and the 10K ohm speed adjust potentiometer.
Twist the speed adjust potentiometer wire to avoid picking up unwanted
electrical noise. If the speed adjust potentiometer wires are longer than
18 in. (46 cm), use shielded cable. Keep the speed adjust potentiometer
wires separate from power leads (L1, L2, A1, A2, F1, F2).
MOUNT THROUGH A 0.38 IN. (10 MM) HOLE
CW
WIPER
CCW
NUT
STAR
WASHER
SPEED ADJUST
POTENTIOMETER
INSULATING DISK
POT TAB ASSIGNMENTS
PANEL
Figure 6. Speed Adjust Potentiometer
10
RGA Series
Mounting (NEMA 4X Enclosures)
NEMA 4X cased drives come with two 0.88 inch (22 mm) conduit
knockout holes at the bottom of the case. The units may be vertically wall
mounted using the four 0.19 inch (5 mm) slotted holes on the attached
heat sink. For motor loads less than 5 ADC, the drive may be bench
mounted horizontally or operated without mounting.
1.
Install the mounting screws.
2.
For access to the terminal strip, turn the slotted screw on the
front cover counterclockwise until it is free from the case. The
right side of the cover is hinged to the case. Pull the slotted
screw to open the case.
3. Carefully remove the conduit knockouts by tapping them into
the case and twisting them off with pliers.
4.
Set the POWER switch to the OFF position before applying the
AC line voltage.
5. Install conduit hardware through the 0.88 inch (22 mm)
knockout holes. Connect external wiring to the terminal block.
6. Grasp the slotted screw and tilt the front cover back into place.
Avoid pinching any wires between the front cover and the case.
7. Turn the slotted screw clockwise until tight to secure the front
cover.
11
RGA Series
Wiring

!
WARNING!
Do not install, rewire, or remove this control with input power
applied. Failure to heed this warning may result in fire, explosion,
or serious injury.
Circuit potentials are at 115 or 230 VAC above ground. To prevent
the risk of injury or fatality, avoid direct contact with the printed
circuit board or with circuit elements.
Do not disconnect any of the motor leads from the drive unless
power is removed or the drive is disabled. Opening any one
motor lead while the drive is running may destroy the drive.
This product does not have internal solid state motor overload
protection. It does not contain speed-sensitive overload
protection, thermal memory retention or provisions to receive
and act upon signal from remote devices for over temperature
protection. If motor over protection is needed in the end-use
product, it needs to be provided by additional equipment in
accordance with NEC standards.
• Use 18 - 24 AWG wire for logic wiring. Use 14 - 16 AWG wire for
AC line and motor wiring.
12
RGA Series
Shielding Guidelines

!
WARNING!
Under no circumstances should power and logic level leads be
bundled together. Induced voltage can cause unpredictable
behavior in any electronic device, including motor controls.
As a general rule, it is recommended to shield all conductors. If it is not
practical to shield power conductors, it is recommended to shield all
logic-level leads. If shielding of all logic-level leads is not practical, the
user should twist all logic leads with themselves to minimize induced
noise.
It may be necessary to earth ground the shielded cable. If noise is
produced by devices other than the drive, ground the shield at the drive
end. If noise is generated by a device on the drive, ground the shield at
the end away from the drive. Do not ground both ends of the shield.
If the drive continues to pick up noise after grounding the shield, it may
be necessary to add AC line filtering devices, or to mount the drive in a
less noisy environment.
Logic wires from other input devices, such as motion controllers and PLL
velocity controllers, must be separated from power lines in the same
manner as the logic I/O on this drive.
13
RGA Series
Line Fusing
Models RGA400-10, RGA403-10, and RGA440-10 are preinstalled with 20
amp fuses. Models RGA400-3, RGA403-3, and RGA440-3 are preinstalled
with 8 amp fuses.
Preinstalled line fuses are rated for maximum horsepower. If the
horsepower rating of the motor being used is less than the maximum
horsepower rating of the drive, the line fuse may have to be replaced
with a lower rated one. Fuses should be rated for 250 VAC or higher and
approximately 150% of the maximum armature current. Refer to Table 1
on page 15 to install a lower rated fuse.
Refer to Table 2 on page 15 for Short Circuit Current Ratings (SCCR).
14
RGA Series
Table 1. Recommended Line Fuse Sizes
90 VDC
Motor
Horsepower
180 VDC
Motor
Horsepower
Maximum DC
Armature Current
(amps)
AC Line
Fuse Size
(amps)
1/20
1/15
1/8
1/6
1/10
1/8
1/4
1/3
0.5
0.8
1.5
1.7
1
1.5
3
3
1/4
1/2
2.5
5
1/3
1/2
3/4
1
3/4
1
1 1/2
2
3.5
5.0
7.5
10
8
10
15
15
See Section 9: Accessories and Replacement Parts for fuse kit part
numbers.
Table 2. Short Circuit Current Ratings
Short Circuit Current Rating
Drive Model
Maximum
Current, kA
Maximum
Voltage, V
RGA400-10
RGA403-10
RGA440-10
15
10,000
240 V
Types of Branch
Circuit Protection
Non-time
Delay
K5 Fuse
Inverse
Time
Circuit
Breaker
Maximum
Rating of
Overcurrent
Protection
30 A
RGA Series
Connections

!
WARNING!
Do not connect this equipment with power applied. Failure to
heed this warning may result in fire, explosion, or serious injury.
American Control Electronics strongly recommends the
installation of a master power switch in the voltage input
line, as shown in Figures 11 and 12 on pages 24 and 25. The
switch contacts should be rated at a minimum of 200% of motor
nameplate current and 250 volts.
Power Input
For chassis models, connect the AC line power leads to terminals L1 and
L2 (115) if using a 115 VAC line or to terminals L1 and L2 (230) if using
a 230 VAC line. American Control Electronics recommends the use of a
single-throw, double-pole master power switch. The switch should be
rated at a minimum of 250 volts and 200% of motor current. Refer to
Figures 11 and 12 on page 24 and 25.
For NEMA 4X models, the connect the AC line power leads to terminals
1 and 2 if using a 115 VAC line or to terminals 1 and 3 if using a 230 VAC
line. Refer to Figure 13 on page 26.
Motor
Drives supply motor armature voltage from A1 and A2 terminals. It is
assumed throughout this manual that, when A1 is positive with respect
to A2, the motor will rotate clockwise (CW) while looking at the output
shaft protruding from the front of the motor. If the motor does not
spin in the desired direction, remove power and reverse the A1 and A2
connections.
Connect a DC motor to terminals A1 and A2 as shown in Figures 11, 12
and 13 on pages 24, 25 and 26. Ensure that the motor voltage rating is
consistent with the drive’s output voltage.
16
RGA Series
Field Output Connections

!
WARNING!
The field output is for shunt wound motors only. Do not make
any connections to F1 and F2 when using a permanent magnet
motor.
See Table 3 for field output connections. Use 14 - 16 AWG wire to
connect the field output to a field / shunt wound motor.
Table 3. Field Output Connections
17
Line Voltage (VAC)
Approximate Field
Voltage (VDC)
Connect Motor
Field To
115
115
230
230
50
100
100
200
F1 and L1
F1 and F2
F1 and L1
F1 and F2
RGA Series
Speed Adjust Potentiometer
Use a 10K ohm, 1/4 W potentiometer for speed control. The motor can
operate in one direction (unidirectional) or two directions (bidirectional)
depending on how the speed adjust potentiometer is connected to the
drive.
For unidirectional operation in the foward direction, connect the speed
adjust potentiometer as shown in Figure 7(a).
For unidirectional operation in the reverse direction, connect the speed
adjust potentiometer as shown in Figure 7(b).
10K OHM
SPEED POT
FWD
FWD
S1
CW
10K OHM
SPEED POT
S3
S2
(a). Unidirectional Forward
S0
S3
S2
S1
S0
For bidirectional operation, connect the speed adjust potentiometer
as shown in Figure 7(c). The motor does not operate when the
potentiometer is in the center position. Turning the potentiometer
clockwise (CW) from the center position causes the motor to rotate in
the forward direction, while turning the potentiometer counterclockwise
(CCW) causes rotation in the reverse direction.
REV
(c). Bidirectional
S3
S2
S1
S0
CW
10K OHM
SPEED POT
CW
REV
(b). Unidirectional Reverse
Figure 7. Speed Adjust Potentiometer Connections
18
RGA Series
Speed Adjust Potentiometer (RGA403 models)
Use a 10K ohm, 1/4 W potentiometer for speed control. The motor can
operate in one direction (unidirectional) or two directions (bidirectional)
depending on how the speed adjust potentiometer is connected to the
drive.
For unidirectional operation in the foward direction, connect the speed
adjust potentiometer as shown in Figure 8(a).
For unidirectional operation in the reverse direction, connect the speed
adjust potentiometer as shown in Figure 8(b).
For bidirectional operation, connect the speed adjust potentiometer
as shown in Figure 8(c). The motor does not operate when the
potentiometer is in the center position. Turning the potentiometer
clockwise (CW) from the center position causes the motor to rotate in
the forward direction, while turning the potentiometer counterclockwise
(CCW) causes rotation in the reverse direction.
CW
FWD
CW
+15
10K OHM
SPEED POT
REV
(c). Bidirectional
CW
REV
-15
+15
COM INPUT 1
10K OHM
SPEED POT
FWD
-15
(a). Unidirectional Forward
COM INPUT 1
-15
+15
COM INPUT 1
10K OHM
SPEED POT
(b). Unidirectional Reverse
Figure 8. RGA403 Speed Adjust Potentiometer Connections
19
RGA Series
Analog Input Signal
Instead of using a speed adjust potentiometer, the drive may be wired to
follow an analog input voltage signal that is isolated from earth ground
(Figure 9). Connect the signal common (–) RB1. Connect the signal
input (+) to S2. A potentiometer can be used to scale the analog input
voltage. An interface device, such as American Control Electronics model
ISO401-1, may be used to scale and isolate an analog input voltage.
RB1 (-)
Signal Common
S2 (+)
Signal Reference
S3
S2
S1
S0
RB1
An isolated analog input voltage range of -10 to 10 VDC is required to
produce an armature voltage range of -90 to 90 VDC with 115 VAC line
voltage or -180 to 180 VDC with 230 VAC line voltage.
Figure 9. Analog Input Signal Connections
20
RGA Series
Analog Input Signal (RGA403 models)
Instead of using a speed adjust potentiometer, the drive may be wired
to follow an analog input voltage or current signal that is either isolated
or non-isolated from earth ground. Connect the signal common (-) to
terminal 7 (COM). If using an input current signal or an input voltage
signal of 0 to ± 25 VDC or less, connect the signal reference (+) to terminal
8 (INPUT 1), or if using an input voltage signal greater than 0 to ±25 VDC,
connect the signal reference (+) to terminal 9 (INPUT 2).
Refer to Figures 15 and 16 on page 29 for switch SW501 settings and
location.
If using an input current signal, the signal may be used to determine
motor speed only. To change direction, a direction switch must be used.
POLARITY
REVERSAL
SWITCH
PREWIRED TO RGA BOTTOM BOARD
Figure 10. RGA403 Analog Input Signal Connections
21
RGA Series
+15 and -15

!
WARNING!
Do not short the +15 and -15 terminals for any reason. Shorting
these terminals will damage the drive.
RGA series drives can supply a regulated +15 and -15 VDC signal (each
sourcing 15 mA maximum) with respect to RB1, to isolated, external
devices. See Figure 10 for voltage supply terminal locations.
Enable, Regen Brake, and Inhibit
See the “Starting and Stopping Methods” section on pages 32 through 36
for a detailed description of the Enable, Inhibit, and Regen Braking (RB1,
RB2) connections.
Direction Switch
For RGA400 and RGA440 models, refer to Figures 22 and 23 on page 50.
For RGA403 models, a single-pole, single-throw switch can be used as a
reversal switch. Connect the switch to terminals COM and DIR. Close the
switch to reverse the motor. Open the switch to return the motor back to
it’s original direction. Refer to Figure 12 on page 25.
22
RGA Series
Tachogenerator Feedback
Using tachogenerator feedback improves speed regulation from
approximately 1% of motor base speed to approximately 0.1% of motor
base speed. Use tachogenerators rated from 7 VDC per 1000 RPM to
50 VDC per 1000 RPM. Connect the tachogenerator to terminals T1
and T2 of terminal block TB502. The polarity is positive (+) for T1 and
negative (-) for T2 when the motor is running in the forward direction.
Place SW504 in the TACH position. See Figures 11, 12 and 13 on pages
24, 25 and 26 for tachogenerator connections. The TACH trim pot must
be adjusted prior to operating with tachogenerator feedback. Refer to
the Calibration section for instructions on calibrating the TACH trim pot.
23
RGA Series
R503
TACH
P509
C506
SW504
R505
T504
MAX SPD
P505
R504
SCR506
P506
FWD ACC
SCR507
P507
REV ACC
DB
P508
C507
C508
SW503
R506
SCR508
C509
C510
R502
FEEDBACK
ARMATURE
TACH
180 ARM
90
IR COMP
P503
REV TQ
P502
FWD TQ
P501
MIN SPD
SCR504
P504
SCR505
T503
T502
SCR503
C501
SO502
T1
T505
C502
FU501 FU502
115
L2
SW501
S1
230
FAST ACTING
FUSES ONLY
S0 RB1 RB2
230
-15 +15
IC501
115
SW502
IC502
C503
REGENERATIVE
BRAKE SWITCH
(OPTIONAL)
S2
L1
TACHOGENERATOR
(OPTIONAL)
T2
INH-RUN
SCR501
INHIBIT
SO501
SCR502
T501
R501
NOTE: DO NOT make
any connections to
T1 and T2 unless using
a tachogenerator.
S3
TB501
C504
TB502
C505
L1
L2
230V
230
VAC
L2
115V
GND F1
F2
A2
A1
115
VAC
A
ARMATURE
OUTPUT
POWER
SWITCH
FIELD OUTPUT
LINE
VOLTAGE
For shunt wound motors
only. See field output
section for connections.
Figure 11. RGA400 Connections
24
RGA Series
PREWIRED TO BOTTOM BOARD
FWD TQ
L2
L1
MIN SPD
REV TQ
IR COMP
MAX SPD
FWD ACC
REV ACC
DB
TACH
POLARITY
REVERSAL
SWITCH
S0
S2
T2
SCR501
R501
T1
T505
C502
115
L2
SW501
S1
230
FAST ACTING
FUSES ONLY
S0 RB1 RB2
230
FU501 FU502
IC502
C503
S2
L1
-15 +15
IC501
115
SW502
S3
TB501
TACHOGENERATOR
(OPTIONAL)
REGENERATIVE
BRAKE SWITCH
(OPTIONAL)
C504
TB502
C505
L1
L2
230V
230
VAC
L2
115V
GND F1
F2
A2
A1
115
VAC
A
ARMATURE
OUTPUT
NOTE: DO NOT make
any connections to
T1 and T2 unless using
a tachogenerator.
POWER
SWITCH
FIELD OUTPUT
LINE
VOLTAGE
For shunt wound motors
only. See field output
section for connections.
Figure 12. RGA403 Connections
25
RGA Series
R503
P509
TACH
C506
SW504
R505
T504
P505
MAX SPD
R504
SCR506
P506
FWD ACC
SCR507
P507
REV ACC
DB
P508
C507
C508
SW503
R506
SCR508
C509
C510
R502
FEEDBACK
ARMATURE
TACH
180 ARM
90
P503
REV TQ
P502
FWD TQ
P501
MIN SPD
SCR504
P504
IR COMP
SCR505
T503
T502
SCR503
C501
SO501
INHIBIT
CR502
T501
TACHOGENERATOR
(OPTIONAL)
T1
T2
INH-RUN
SO502
NOTE: DO NOT make
any connections to
T1 and T2 unless using
a tachogenerator.
-15 +15
S0 RB1 RB2
3
SW501
S1
115
115 VAC
IC502
S2
C503
S3
TB501
TB502
C504
230 VAC
2
230
1
IC501
C505
L1
L2
230V
L2
115V
GND F1
F2
A2
PREWIRED TO POT AND
SWITCH ON COVER
C502
A1
A
ARMATURE
OUTPUT
FIELD OUTPUT
For shunt wound motors
only. See field output
section for connections.
Figure 13. RGA440 Connections
26
RGA Series
Section 5. Operation

!
WARNING!
Change voltage switch settings only when the drive is
disconnected from AC line voltage. Make sure both switches are
set to their correct position. If the switches are improperly set
to a lower voltage position, the motor will not run at full voltage
and may cause damage to the transformer. If the switches are
improperly set to a higher voltage position, the motor will
overspeed, which may cause motor damage, or result in bodily
injury or loss of life.
Dangerous voltages exist on the drive when it is powered. BE
ALERT. High voltages can cause serious or fatal injury. For your
safety, use personal protective equipment (PPE) when operating
this drive.
If the motor or drive does not perform as described, disconnect
the AC line voltage immediately. Refer to the Troubleshooting
section, page 59, for further assistance.
Before Applying Power
1. Verify that no foreign conductive material is present on the
printed circuit board.
2.
27
Ensure that all switches are properly set.
RGA Series
Select Switches
Input Voltage Select (SW501, SW502)
Set the input voltage select switches SW501 and SW502 to either 115 or
230 to match the AC line voltage. See Figure 14.
Armature Voltage Select (SW503)
Set the armature voltage select switch SW503 to either 90 or 180 to
match the maximum armature voltage. See Figure 14.
Feedback Select (SW504)
Set the feedback select switch SW504 to either ARM for armature
feedback or TACH for tachogenerator feedback. See Figure 14.
L1
L2
SCR502
SCR501
L2
230V
115
SCR506
SCR507
R504
C510
SCR508
R506
R505
C509
C507
C508
C506
TB501
A2
C502
C503
A1
IC501
IC502
C505
TB502
S3
S2
S1
S0 RB1 RB2
-15 +15
T1
T2
R503
SW504
SO502
F2
Input Voltage
Select
(SW501, SW502)
R502
T504
T503
T502
T501
SW503
T505
GND F1
INH-RUN
FEEDBACK
ARMATURE
TACH
180 ARM
90
230
SCR505
R501
230
SW502
SW501
L2
115V
115
Armature Voltage
Select (SW503)
SCR504
SCR503
C501
FAST ACTING
FUSES ONLY
L1
FU501 FU502
C504
SO501
INHIBIT
Feedback Select
(SW504)
P501
P502
P503
P504
P505
P506
P507
P508
P509
MIN SPD
FWD TQ
REV TQ
IR COMP
MAX SPD
FWD ACC
REV ACC
DB
TACH
Figure 14. Select Switches
28
RGA Series
Signal Select (SW501) (RGA403 models)
Set the signal switch SW501 based on the type of input signal to be used.
See Figure 15 for settings and Figure 16 for location.
INPUT
SIGNAL
LEVEL
VDC
1 - 5 mA
4 - 20 mA
10 - 50 mA
Figure 15. SW501 Settings
Input Voltage Select (SW502) (RGA403 models)
Set the input voltage select switch SW502 to either 115 or 230 to match
the AC line voltage. See Figure 16.
Signal Select
(SW501)
Input Voltage
Select (SW502)
Figure 16. RGA403 Select Switches
29
RGA Series
Startup
RGA400 and RGA403
1.
Turn the speed adjust potentiometer full counterclockwise
(CCW) or set the input voltage or current signal to minimum.
2. Apply AC line voltage.
3. Slowly advance the speed adjust potentiometer clockwise
(CW) or increase the input voltage or current signal. The motor
slowly accelerates as the potentiometer is turned CW or as the
input voltage or current signal is increased. Continue until the
desired speed is reached.
4.
Remove AC line voltage from the drive to coast the motor to a
stop.
30
RGA Series
RGA440
1. Set the FORWARD/BRAKE/REVERSE switch to the BRAKE
position.
2. Turn the speed adjust potentiometer to “0” (full CCW) or set
the input voltage signal to minimum.
3. Set the POWER switch to the ON position.
4. Set the FORWARD/BRAKE/REVERSE switch to the desired
direction of rotation.
5. Slowly advance the speed adjust potentiometer clockwise
(CW) or increase the input voltage signal. The motor slowly
accelerates as the potentiometer is turned CW or as the input
voltage signal is increased. Continue until the desired speed is
reached.
6. To brake the motor to a stop, set the FORWARD/BRAKE/
REVERSE switch to the BRAKE position. To coast the motor to a
stop, set the POWER switch to the “O” (OFF) position.
7. To reverse direction, set the FOWARD/BRAKE/REVERSE switch
to the desired direction.
8. Set the POWER switch to the OFF position.
31
RGA Series
Starting and Stopping Methods

!
WARNING!
Regenerative braking, coasting to a stop, or decelerating to
minimum speed is recommended for frequent starts and stops.
Do not use any of these methods for emergency stopping. They
may not stop a drive that is malfunctioning. Removing AC line
power (both lines) is the only acceptable method for emergency
stopping.
For this reason, American Control Electronics strongly
recommends installing an emergency stop switch on both AC line
inputs (see Figures 11 and 12 on pages 23 and 24).
Frequent starting and stopping can produce high torque. This
may cause damage to motors, especially gearmotors that are not
properly sized for the application.
Automatic Restart Upon Power Restoration
All drives automatically run to set speed when power is applied, the drive
is enabled, and the inhibit is open.
Line Starting and Stopping
Line starting and stopping (applying and removing AC line voltage) is
recommended for infrequent starting and stopping of a drive only. When
AC line voltage is applied to the drive, the motor accelerates to the speed
set by the speed adjust potentiometer or analog signal. When AC line
voltage is removed, the motor coasts to a stop.
32
RGA Series
Regenerative Brake to Zero Speed (INHIBIT Terminals)
Short the INHIBIT terminals to regeneratively brake the motor to zero
speed (see Figure 17). The inhibit bypasses both the MIN SPD trim pot
and the deceleration rate set by the FWD ACC or REV ACC trim pots.
Open the INHIBIT terminals to accelerate the motor to set speed.
Twist inhibit wires and separate them from power-carrying wires or
sources of electrical noise. Use shielded cable if the inhibit wires are
longer than 18 inches (46 cm). If shielded cable is used, ground only one
end of the shield to earth ground. Do not ground both ends of the shield.
American Control Electronics offers two accessory plug harnesses for
connecting to the INHIBIT terminals: part number KTW-0001 [plug with
18 in. (46 cm) leads]; and part number KTW-0002 [plug with 36 in. (91
cm) leads].
L1
L2
SCR502
SCR501
L2
230V
SCR505
115
SCR507
C509
C507
C508
C506
C502
A1
C503
TB501
A2
IC501
IC502
C505
TB502
S2
S1
S0 RB1 RB2
-15 +15
T1
T2
Inhibit
Terminals
P501
P502
P503
P504
P505
P506
P507
P508
P509
MIN SPD
FWD TQ
REV TQ
IR COMP
MAX SPD
FWD ACC
REV ACC
DB
TACH
Figure 17. Inhibit Terminals
R503
SW504
SO502
F2
SO501
INHIBIT
R502
T504
T503
T502
T501
SW503
T505
GND F1
INH-RUN
S3
33
C510
SCR508
R506
R505
FEEDBACK
ARMATURE
TACH
180 ARM
90
230
SCR506
R504
R501
230
SW502
SW501
L2
115V
115
SCR504
SCR503
C501
FAST ACTING
FUSES ONLY
L1
FU501 FU502
C504
RGA Series
Regenerative Decel to Zero Speed (RB1 and RB2 Terminals)
Short the RB1 and RB2 terminals to regeneratively brake the motor to
zero speed. See Figures 11, 12 and 13 on pages 24, 25 and 26. The RB1
and RB2 circuit follows the deceleration rate set by the FWD ACC and
REV ACC trim pots. Open the RB1 and RB2 terminals to accelerate the
motor to set speed.
34
RGA Series
Regenerative Decel to Minimum Speed
The switch shown in Figure 18 may be used to decelerate a motor to
a minimum speed. Closing the switch between S0 and S2 decelerates
the motor from set speed to a minimum speed determined by the MIN
SPD trim pot setting. If the MIN SPD trim pot is set full CCW, the motor
decelerates to zero speed. The REV ACC or FWD ACC trim pot setting
determines the rate at which the drive decelerates, depending on the
direction of deceleration. By opening the switch, the motor accelerates
to set speed.
CW
S1
or
S3
10K OHM
SPEED ADJUST
POTENTIOMETER
S2
S0
RUN
DECEL TO
MIN SPEED
Figure 18. Run/Decelerate to Minimum Speed Switch
35
RGA Series
Coast to Zero Speed (INHIBIT-RUN)
To coast the motor to a stop, without removing power to the drive,
jumper INHIBIT-RUN terminals 1 and 2. To restart the motor, jumper
INHIBIT-RUN terminals 2 and 3. A single-pole, double-throw switch may
be used as a COAST/RUN switch. Each drive is assembled with INHIBITRUN terminals 2 and 3 jumpered. These terminals must be connected
for the motor to run. See Figure 19.
American Control Electronics offers an accessory plug harness for
connecting to the INHIBIT-RUN terminals: part number KTW-0197 [plug
with 18 in. (46 cm) leads].
CO
C AOSATSTTO
T OSTSOTPOP
UN
RRU
11
22
33
S0502
SO
502
COAST / RUN
SWITCH
I NINHH--RRUN
UN
L2
230V
R501
230 230
FU504
SW502
SW501
L2
115V
115
115
T505
GND
2
3
SO502
F1
1
F2
IN H - R U N
C502
C503
TB 501
A2
S O5 0 1
IC 5 0 1
IC 5 0 2
A1
IN H IB IT
C505
TB 502
S3
S2
S1
S 0 R B 1R B 2 - 15 + 15
T1
T2
Figure 19. Inhibit-Run Terminal Location and Run/Coast Switch
36
RGA Series
Section 6. Calibration

!
WARNING!
Dangerous voltages exist on the drive when it is powered. When
possible, disconnect the voltage input from the drive before
adjusting the trim pots. If the trim pots must be adjusted with
power applied, use insulated tools and the appropriate personal
protection equipment. BE ALERT. High voltages can cause serious
or fatal injury.
RGA series drives have user-adjustable trim pots. Each drive is factory
calibrated to its maximum current rating. Readjust the calibration trim
pot settings to accommodate lower current rated motors.
All adjustments increase with CW rotation and decrease with CCW
rotation. Use a non-metallic screwdriver for calibration. Each trim pot is
identified on the printed circuit board.
37
RGA Series
Minimum Speed (MIN SPD)
The MIN SPD setting determines the minimum motor speed in
unidirectional operation when the speed adjust potentiometer or input
voltage signal is set for minimum speed.
To calibrate the MIN SPD:
1.
Set the speed adjust potentiometer or input voltage signal for
minimum speed.
2.
Adjust MIN SPD until the desired minimum speed is reached or
is just at the threshold of rotation.
Maximum Speed (MAX SPD)
The MAX SPD setting determines the maximum motor speed in the
forward and reverse direction when the speed adjust potentiometer or
input voltage signal is set for maximum speed.
To calibrate MAX SPD:
1.
Set the speed adjust potentiometer or input voltage signal for
maximum speed.
2.
Adjust MAX SPD until the desired maximum speed is reached.
Note: Check the MIN SPD and MAX SPD adjustments after recalibrating
to verify that the motor runs at the desired minimum and maximum
speed.
Note: If using models RGA403-3 or RGA403-10, set the MIN SPD to full
CCW and the MAX SPD to full CW. Use the MIN OUT and MAX SPD
trim pots located on the top board for minimum and maximum speed
calibration. See page 45 for calibration of those trim pots.
38
RGA Series
Forward Torque (FWD TQ)

!
WARNING!
FWD TQ should be set to 150% of motor nameplate current
rating. Continuous operation beyond this rating may damage the
motor. If you intend to operate beyond the rating, contact your
American Control Electronics representative for assistance.
The FWD TQ setting determines the maximum torque for accelerating
and driving the motor in the forward direction. It also sets the maximum
torque for decelerating the motor in the reverse direction. To calibrate
FWD TQ, refer to the recommended FWD TQ settings in Figure 20 (page
42) or use the following procedure:
1. With the power disconnected from the drive, connect a DC
ammeter in series with the armature.
2. Set the FWD TQ trim pot to minimum (full CCW).
3. Set the speed adjust potentiometer or input voltage or current
signal to maximum speed.
4. Carefully lock the motor armature. Be sure that the motor is
firmly mounted.
5. Apply line power. The motor should be stopped.
6. Slowly adjust the FWD TQ trim pot CW until the armature
current is 150% of motor rated armature current.
7. Set the speed adjust potentiometer CCW or decrease the
input voltage or current signal to minimum speed.
8. Remove line power.
9. Remove the stall from the motor.
10. Remove the ammeter in series with the motor armature if it is
no longer needed.
39
RGA Series
Reverse Torque (REV TQ)

!
WARNING!
REV TQ should be set to 150% of motor nameplate current
rating. Continuous operation beyond this rating may damage the
motor. If you intend to operate beyond the rating, contact your
American Control Electronics representative for assistance.
The REV TQ setting determines the maximum torque for decelerating
the motor in the forward direction. It also sets the maximum torque for
accelerating and driving the motor in the reverse direction. To calibrate
REV TQ, refer to the recommended REV TQ settings in Figure 20 (page 42)
or use the following procedure:
1. With the power disconnected from the drive, connect a DC
ammeter in series with the armature.
2. Set the REV TQ trim pot to minimum (full CCW).
3. Set the speed adjust potentiometer or input voltage or current
signal to maximum speed.
4. Carefully lock the motor armature. Be sure that the motor is
firmly mounted.
5. Apply line power. The motor should be stopped.
6. Slowly adjust the REV TQ trim pot CW until the armature
current is 150% of motor rated armature current.
7. Set the speed adjust potentiometer CCW or decrease the
input voltage or current signal to minimum speed.
8. Remove line power.
9. Remove the stall from the motor.
10. Remove the ammeter in series with the motor armature if it is
no longer needed.
40
RGA Series
IR Compensation (IR COMP)
The IR COMP setting determines the degree to which motor speed is held
constant as the motor load changes.
Use the following procedure to recalibrate the IR COMP setting:
1.
Set the IR COMP trim pot to minimum (full CCW).
2. Increase the speed adjust potentiometer or input voltage or
current signal until the motor runs at midspeed without load
(for example, 900 RPM for an 1800 RPM motor). A handheld
tachometer may be used to measure motor speed.
3. Load the motor armature to its full load armature current
rating.The motor should slow down.
4. While keeping the load on the motor, rotate the IR COMP trim
pot until the motor runs at the speed measured in step 2. If
the motor oscillates (overcompensation), the IR COMP trim pot
may be set too high (CW). Turn the IR COMP trim pot CCW to
stabilize the motor.
5. Unload the motor.
See Figure 20 on page 42 for recommended IR COMP settings.
41
RGA Series
RGA4xx-10 Models
F W D TQ
TQ
FWD
F W D TQ
TQ
FWD
RREV
E V TTQ
Q
RREV
E V TTQ
Q
IR COMP
COMP
IR
1 HP
90 VDC
10 ADC
IR COMP
COMP
IR
3/4 HP
90 VDC
7.6 ADC
F W D TQ
TQ
FWD
F W D TQ
TQ
FWD
RREV
EV TQ
TQ
RREV
E V T TQ
Q
IR
OMP
IR CCOMP
2 HP
180 VDC
9.2 ADC
IR
COMP
IR COMP
1 HP
180 VDC
5 ADC
IR
COMP
IR COMP
3/4 HP
180 VDC
3.8 ADC
1/2 HP
90 VDC
FWD TQ
F W D TQ
TQ
FWD
REV TQ
RREV
E V TTQ
Q
IR COMP
IR COMP
COMP
IR
5 ADC
1/4 HP
90 VDC
2.7 ADC
F W D TQ
TQ
FWD
F W D TQ
TQ
FWD
RREV
E V T TQ
Q
1/2 HP
180 VDC
2.5 ADC
RREV
E V T TQ
Q
IR
COMP
IR COMP
RREV
E V TTQ
Q
IR COMP
COMP
IR
1/4 HP
180 VDC
1.4 ADC
IR COMP
COMP
IR
1/8 HP
180 VDC
0.67 ADC
RGA4xx-3 Models
F W D TQ
TQ
FWD
F W D TQ
TQ
FWD
F W D TQ
TQ
FWD
RREV
E V TTQ
Q
RREV
E V TTQ
Q
RREV
E V TTQ
Q
IR COMP
1/8 HP
90 VDC
1.3 ADC
IR COMP
COMP
IR
1/10 HP
90 VDC
1.1 ADC
IR COMP
COMP
IR
1/20 HP
90 VDC
0.56 ADC
F W D TQ
TQ
FWD
F W D TQ
TQ
FWD
RREV
E V TTQ
Q
Figure 20. Recommended FWD TQ, REV TQ, and IR COMP settings
(actual settings may vary with each application)
42
RGA Series
Forward Acceleration (FWD ACC)
The FWD ACC setting determines the time the motor takes to ramp to a
higher speed in the forward direction or to a lower speed in the reverse
direction. See Specifications on page 2 for approximate acceleration
times. ACCEL is factory set for the fastest acceleration time (full CCW).
Turn the FWD ACC trim pot CW to increase the foward acceleration time
and CCW to decrease the foward acceleration time.
Reverse Acceleration (REV ACC)
The REV ACC setting determines the time the motor takes to ramp to a
lower speed in the forward direction or to a higher speed in the reverse
direction. See Specifications on page 2 for approximate acceleration
times. REV ACC is factory set for the fastest acceleration time (full CCW).
Turn the REV ACC trim pot CW to increase the reverse acceleration time
and CCW to decrease the reverse acceleration time
43
RGA Series
Deadband (DB)
The DB setting determines the time that will elapse between the
application of current in one direction before current is applied in the
opposite direction.
The DB affects the resistance that a motor has to changes in the shaft
position at zero speed. It does this by applying an AC voltage to the
motor armature.
The deadband is factory calibrated to approximately 3/4 of a turn
position for 60 Hz AC line operation. Recalibrate the trim pot to
approximately the 1/4 of a turn position for 50 Hz AC line operation. If
you hear motor noise (humming), the deadband might be set too high.
Turn the DB trim pot CCW until the motor noise ceases.
50 Hz
60 Hz
Applications Applications
DB
DB
Figure 21. Deadband settings
44
RGA Series
Tachogenerator (TACH)

!
Calibrate the TACH setting only when a tachogenerator is used.
WARNING!
The TACH setting, like IR COMP setting, determines the degree to which
motor speed is held constant as the motor load changes. To calibrate
the TACH trim pot:
1.
Connect the tachogenerator to T1 and T2. The polarity is positive
(+) for T1 and negative (-) for T2 when the motor is running in the
forward direction.
2.
Set the feedback select switch SW504 to ARM for armature
feedback.
3.
Set the speed adjust potentiometer or input voltage or current
signal to maximum speed. Measure the armature voltage across
A1 and A2 using a voltmeter.
4.
Set the speed adjust potentiometer or input voltage or current
signal to zero speed.
5.
Set SW504 to TACH for tachogenerator feedback.
6.
Set the IR COMP trim pot to full CCW.
7.
Set the TACH trim pot to full CW.
8.
Set the speed adjust potentiometer or input voltage or current
signal to maximum speed.
9.
Adjust the TACH trim pot until the armature voltage is the same
value as the voltage measured in step 3.
Check that the TACH is properly calibrated. The motor should run
at the same set speed when SW504 is set to either armature or
tachogenerator feedback.
45
RGA Series
Minimum Speed (MIN OUT), Maximum Speed
(MAX OUT) & Signal Input Adjust (RGA403 models)
The following minimum and maximum values should be known.
INmin - Minimum analog input signal.
INmax - Maximum analog input signal.
OUTmin - Minimum analog output signal.
OUTmax - Maximum analog output signal.
INmin and INmax is the voltage applied across terminals 7(COM) and
8 (INPUT 1) or 9 (INPUT 2). OUTmin and OUTmax is the voltage across
terminals 1 (OUT 1) and 2 (OUT 2) that connect to the lower board.
Calibration Procedure
1. Ensure that switch SW501 on the top board is properly set. See page 29 for switch settings.
2. Connect (but do not power) the analog input signal as follows.
- Connect the signal negative (-) to terminal 7 (COM).
- For a current signal or a 0 - ± 25 VDC voltage signal, connect the
- signal positive (+) to terminal 8 (INPUT 1).
- For a 0 - ± 250 VDC voltage signal, connect the signal positive (+) to
- terminal 9 (INPUT 2).
46
RGA Series
3. Calibrate the regenerative drive’s MIN SPD trim pot full CCW and the MAX SPD trim pot full CW.
4. Apply AC line voltage and the analog input signal.
5. Set the input signal to INmin.
6. Adjust the MIN OUT trim pot (P503) so that the output voltage is OUTmin.
7. Set the analog input signal to INmax.
8. Calculate the test point voltage, Vtp;
Vtp =
INmax * m
2
where
m=
OUTmax - OUTmin
INmax - INmin
9. Adjust the SIGNAL INPUT ADJ trim pot (P501) so that the voltage
between terminals 7 (COM) and 10 (TP) is Vtp.
10. Adjust the MAX OUT trim pot (P502) so that the voltage output
signal is OUTmax.
11. Repeat steps 4, 5, 6, 7, 9, and 10 using the same values.
47
RGA Series
Section 7.Application Notes
Direction Switch
For a Forward/Reverse switch, use a single-pole, two-position switch
with a single speed adjust potentiometer to regeneratively reverse the
motor (Figure 22). If a Forward/Stop/Reverse switch is desired, use a
single-pole, three-position switch (Figure 23). The MIN SPD setting is in
effect for either direction.
10K OHM
SPEED ADJUST
POTENTIOMETER
S0
S1
S2
S3
FWD
CW
REV
Figure 22. Forward-Reverse Switch
10K OHM
SPEED ADJUST
POTENTIOMETER
S0
S1
S2
S3
FWD
CW
STOP
REV
Figure 23. Forward-Stop-Reverse Switch.
48
RGA Series
Multiple Fixed Speeds
Replace the speed adjust potentiometer with a series of resistors with a
total series resistance of 10K ohms (Figure 24). Add a single pole, multiposition switch with the correct number of positions for the desired
number of fixed speeds.
R1
S1 or S3
R2
S2
R3
S0
TOTAL SERIES
RESISTANCE
10K OHMS
R4
Figure 24. Multiple Fixed Speeds
49
RGA Series
Adjustable Speeds Using Potentiometers In Series
Replace the speed adjust potentiometer with a series of resistors with a
total series resistance of 10K ohms (Figure 25). Add a single pole, multiposition switch with the correct number of positions for the desired
number of fixed speeds.
CW
S1
HIGH
SPEED
5K
OHM
LOW
SPEED
CW
S2
S0
5K
OHM
Figure 25. Adjustable Speeds Using Potentiometers In Series
50
RGA Series
Independent Adjustable Speeds
Replace the speed adjust potentiometer with a single pole, multiposition switch, and two or more potentiometers in parallel, with a total
parallel resistance of 10K ohms. Figure 26 shows the connection of two
independent speed adjust potentiometers that can be mounted at two
separate operating stations.
S0
SPEED 2
CW
CW
SPEED 1
20K
OHM
20K
OHM
S2
S1
or
S3
Figure 26. Independent Adjustable Speeds
51
RGA Series
Independent Adjustable Forward and Reverse Speeds
Replace the speed adjust potentiometer with a single pole, multi-position
switch, and two or more potentiometers in parallel, with a total parallel
resistance of 10K ohms. Figures 27 and 28 show the connection of two
independent forward and reverse speed adjust potentiometers that can
be mounted at two separate operating stations.
S3
S2
S1
CW
CW
REV
10K OHM
FWD
10K OHM
FWD
REV
S0
Figure 27. Independent Adjustable Forward and Reverse Speeds
S3
S2
S1
FWD
CW
CW
REV
10K OHM
FWD
10K OHM
STOP
REV
S0
Figure 28. Independent Adjustable Forward and Reverse Speeds
with Stop
52
RGA Series
RUN/JOG Switch - Inhibit Connection
Use a single pole, two position switch for the RUN/JOG switch, and a
single pole, normally closed, momentary operated pushbutton for the
JOG pushbutton.
Connect the RUN/JOG switch and JOG pushbutton to the inhibit terminals
as shown in Figure 29. The motor coasts to a stop when the RUN/JOG
switch is set to JOG. Press the JOG pushbutton to jog the motor. Return
the RUN/JOG switch to RUN for normal operation.
RUN
INHIBIT
JOG
PUSHBUTTON
JOG
Figure 29. RUN/JOG Switch - Inhibit Connection
53
RGA Series
RUN/JOG Switch - Potentiometer Connection
Connect the RUN/JOG switch and the JOG pushbutton as shown in Figure
30. When the RUN/JOG switch is set to JOG, the motor decelerates to
zero speed. Press the JOG pushbutton to jog the motor. Return the RUN/
JOG switch to RUN for normal operation.
S1
or
S3
CW
S2
10K OHM
SPEED ADJUST
POTENTIOMETER
S0
RUN
JOG
JOG
PUSHBUTTON
Figure 30. RUN/JOG Switch - Speed Adjust Potentiometer Connection
54
RGA Series
Leader-Follower Application
In this application, use a ISO202-1 to monitor the speed of the leader
motor (Figure 31). The ISO202-1 isolates the leader motor from the
follower drive, and outputs a voltage proportional to the leader motor
armature voltage. The follower drive uses this voltage reference to set
the speed of the follower motor. An optional ratio potentiometer may be
used to scale the ISO202-1 output voltage.
MOTOR
A2
(+) 2
9 (+)
A1
Leader
Drive
ISO202-1
8
7 (-)
TB501
S2
(-) 1
TB502
S0
10K Ohm
(optional)
Figure 31. Leader-Follower Application
55
Follower
Drive
RGA Series
Single Speed Potentiometer Control Of Multiple Drives
Multiple drives can be controlled with a single speed adjust potentiometer
using a ISO101-8 at the input of each drive to provide isolation (Figure
32). Optional ratio potentiometers can be used to scale the ISO101-8
output voltage, allowing independent control of each drive.
10K Ohms
ratio pot A
(optional)
10K Ohms
S3
+
S2
1
S2
S1
-
S0
+
Drive
A
A1
ratio pot B
(optional)
10K Ohms
A1
2
S2
-
S0
Motor
A
A2
Drive
B
Motor
B
A2
ISO101-8
+
ratio pot H
(optional)
10K Ohms
A1
8
S2
-
S0
Drive
H
Motor
H
A2
Figure 32. Single Speed Potentiometer Control of Multiple Drives
56
RGA Series
Section 8. Troubleshooting

!
WARNING!
Dangerous voltages exist on the drive when it is powered. When
possible, disconnect the drive while troubleshooting. High
voltages can cause seroius or fatal injury.
Before Troubleshooting
Perform the following steps before starting any procedure in this
section:
1.
Disconnect AC line voltage from the drive.
2. Check the drive closely for damaged components.
3. Check that no conductive or other foreign material has become
lodged on the printed circuit board.
4. Verify that every connection is correct and in good condition.
5. Verify that there are no short circuits or grounded
connections.
6. Check that the drive’s rated armature is consistent with the
motor ratings.
For additional assistance, contact your local American Control
Electronics distributor or the factory direct:
(800) AMCNTRL or FAX: (800) 394-6334
57
RGA Series
PROBLEM
Line fuse
blows.
Line fuse does
not blow, but
the motor does
not run.
POSSIBLE CAUSE
SUGGESTED SOLUTIONS
1. Line fuse is the wrong size.
1. Check that the line fuse is
correct for the motor size.
2. Motor cable or armature is
shorted to ground.
2. Check motor cable and
armature shorts.
3. Nuisance tripping caused by
a combination of ambient
conditions and high-current
spikes (i.e. reversing).
3. Add a blower to cool the
drive components; decrease
FWD TQ or REV TQ settings,
or resize motor and drive
for actual load demand, or
check for incorrectly aligned
mechanical components or
“jams”. See pages 38 and 39 for
information on adjusting the
FWD TQ and REV TQ trim pots.
1. Speed adjust potentiometer
or speed reference voltage
is set to zero speed.
1. Increase the speed adjust
potentiometer setting or speed
reference signal.
2. INHIBIT mode is active.
2. Remove the short from the
INHIBIT.
3. S2 is shorted to S0 or RB1.
3. Remove the short.
4. Drive is in current limit.
4. Verify that the motor is not
jammed. Increase FWD TQ or
REV TQ setting if set too low.
See pages 39 and 40.
5. Drive is not receiving AC line
voltage.
5. Apply AC line voltage to L1 and
L2.
6. Motor is not connected.
6. Connect the motor to A1 and
A2.
7. Drive is not enabled
7. Make sure jumper SO502 is set
to RUN.
58
RGA Series
PROBLEM
SUGGESTED SOLUTIONS
1. Motor connections to A1
and A2 are reversed.
1. Reverse connections to A1 and
A2.
Motor runs too
fast.
1. MAX SPD and MIN SPD are
set too high.
1. Calibrate MAX SPD and MIN
SPD. See page 38.
2. Motor field connections are
loose.
2. Check motor field connections.
1. MAX SPD setting is too low.
1. Increase MAX SPD setting. See
page 38.
2. IR COMP setting is too low.
2. Increase IR COMP setting. See
page 41.
3. Torque setting is too low.
3. Increase FWD TQ or REV TQ
setting. See pages 39 and 40.
4. Motor is overloaded.
4. Check motor load. Resize the
motor and drive if necessary.
1. IR COMP is set too high.
1. Adjust the IR COMP setting
slightly CCW until the motor
speed stabilizes. See page 41.
2. Motor bouncing in and out
of current limit.
2. Make sure motor is not
unddersized for load; adjust
FWD TQ or REV TQ trim pot
CW. See pages 39 and 40.
Motor will
not reach the
desired speed.
Motor pulsates
or surges under
load.
59
POSSIBLE CAUSE
Motor runs in
the opposite
direction
(non-reversing
drives)
RGA Series
Section 9. Accessories & Replacement Parts
Displays
Closed Loop............................................................................. OLD100-1
Open Loop............................................................................... CLD100-1
Heat Sinks
HSK-0001.................................................................................. HSK-0001
Kits
Potentiometer & Connector
RGA400 Pot......................................................................... KTP-0001
Fuse
2 1.5 Amp 250V 3AG Fast-blow Glass Fuses........................ KTF-0001
2 3 Amp 250V 3AG Fast-blow Glass Fuses........................... KTF-0002
2 5 Amp 250V 3AG Fast-blow Glass Fuses........................... KTF-0003
2 8 Amp 250V 3AG Fast-blow Glass Fuses........................... KTF-0004
2 10 Amp 250V 3AB Normal-blow Ceramic Fuses............... KTF-0005
2 15 Amp 250V 3AB Normal-blow Ceramic Fuses............... KTF-0006
Logic Cards
Current Sensing
5 Amps................................................................................CMC100-5
20 amps............................................................................CMC100-20
Isolation Cards
Adder Board.........................................................................ISO401-1
Unidirectional, 8 outputs......................................................ISO101-8
60
RGA Series
Notes
61
RGA Series
Unconditional Warranty
A. Warranty
American Control Electronics warrants that its products will be free from defects in workmanship
and material for twelve (12) months or 3000 hours, whichever comes first, from date of
manufacture thereof. Within this warranty period, American Control Electronics will repair or
replace, at its sole discretion, such products that are returned to American Control Electronics,
14300 De La Tour Drive, South Beloit, Illinois 61080 USA.
This warranty applies only to standard catalog products, and does not apply to specials. Any
returns of special controls will be evaluated on a case-by-case basis. American Control Electronics
is not responsible for removal, installation, or any other incidental expenses incurred in shipping
the product to and from the repair point.
B. Disclaimer
The provisions of Paragraph A are American Control Electronics’s sole obligation and exclude all
other warranties of merchantability for use, expressed or implied. American Control Electronics
further disclaims any responsibility whatsoever to the customer or to any other person for
injury to the person or damage or loss of property of value caused by any product that has been
subject to misuse, negligence, or accident, or misapplied or modified by unauthorized persons
or improperly installed.
C. Limitations of Liability
In the event of any claim for breach of any of Americn Control Electronics’s obligations, whether
expressed or implied, and particularly of any other claim or breach of warranty contained in
Paragraph A, or of any other warranties, expressed or implied, or claim of liability that might,
despite Paragraph B, be decided against American Control Electronics by lawful authority,
American Control Electronics shall under no circumstances be liable for any consequential
damages, losses, or expenses arising in connection with the use of, or inability to use, American
Control Electronics’s product for any purpose whatsoever.
An adjustment made under warranty does not void the warranty, nor does it imply an extension
of the original 12-month warranty period. Products serviced and/or parts replaced on a
no-charge basis during the warranty period carry the unexpired portion of the original warranty
only.
If for any reason any of the foregoing provisions shall be ineffective, American Control Electronics’s
liability for damages arising out of its manufacture or sale of equipment, or use thereof, whether
such liability is based on warranty, contract, negligence, strict liability in tort, or otherwise, shall
not in any event exceed the full purchase price of such equipment.
Any action against American Control Electronics based upon any liability or obligation arising
hereunder or under any law applicable to the sale of equipment or the use thereof, must be
commenced within one year after the cause of such action arises.
62
RGA400-3
RGA 403-3
RGA 440-3
RGA400- 10
RGA 403-10
RGA 440-10
w w w.a m ericancont rolelect ronics.com
1430 0 DE LA TOUR DRIV E
SO U TH BELOIT, IL 61080
(844) A MCNTRL
MA N-0010 Rev 1
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