2
NOTES FOR SAFE OPERATION
Read this instruction manual thoroughly before installation, operation, maintenance or inspection. In this manual, the NOTES
FOR SAFE OPERATION is classified as “CAUTION”.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury to personnel and damage to equipment.
It may also be used to alert against unsafe practices.
Even items described in
CAUTION may result in a vital accident in some situations. In either case, follow these important items.
NOTE z : These are steps to be taken to insure proper operation and to avoid malfunctions, etc.
CAUTION
S
The option card uses a C MOS IC chip. It may break if touched by bare fingers because of static electricity. Be careful when handling.
S
When removing the option card from the inverter for transportation or storage, put the card into the anti-static package it was in when delivered.
S
Never change wiring or connect or disconnect connectors while the power is ON.
Failure to observe this caution may injure you.
PG speed control card, PG-A2 is mounted on the control board of the inverter, and performs speed feedback using the pulse generator (PG) on the motor to correct speed fluctuations caused by slipping. The card is used for V/f control with
PG.
This option card is applicable to the following inverter series:
VS−616G5: Entire series
Name Code No.
PG speed control card PG−A2
73600−A012X
Functions
S
Phase A pulse (Single pulse) inputs.
S
Maximum input frequency: 32,767Hz
S
Pulse monitor output: +12V, 20mA (max.)
Terminal block
TA1
Terminal TA2
(for connecting shielded sheath)
Spacer mounting hole (3.2mm dia.)
Grounding lead wire
(connected to pin #12 of inverter control board)
Spacer mounting hole (3.2mm dia.)
Variable resistor for adjusting +12V power
Fig. 1 PG speed control card PG-A2
Verify that the attachment below is in the package.
Connector to inverter control board (4CN)
Spacer mounting hole (4.0mm dia.)
S
Spacer : 1 pc. (Dimentions in mm)
5 33.6
5.7
Fig. 2 Spacer (code no. SRNT41028−9)
3
4
NOTE Before use,
(1) Before using PG−A2, read this manual and the manual for the installation of the inverter.
(2) Before connecting PG−A2 or external terminals, turn OFF main power of the inverter and verify the CHARGE indicaor lamp of the inverter is
OFF.
(3) When ordering the PG−A2, specify the name and code number.
1 Inspection after Delivery
CAUTION
S
Verify that ordered products have been delivered.
Installation of a wrong device may lead to injury or damage.
Though the products have undergone rigorous inspection before shipping, check the following for safety.
S
Check the name written on the product to verify that ordered products have been delivered.
S
Check for damage caused during transportation.
If there is anything uncertain on the structure, contact your YASKAWA representative.
2 Installing to Inverter (See Fig. 3)
2.1
Installation Procedure
1
Turn OFF the main power and wait for the time specified on the cover of the inverter. Remove the cover and verify that the CHARGE indicator lamp is
OFF.
2
Insert the attached spacer (SRNT41028−9) into the spacer mounting hole in the mounting base of the inverter. (See Fig. 3.)
Inverters of 3.7kW or smaller capacities have two closely placed holes. Insert the spacer into the hole on the 7CN side. Inserting into the wrong hole will stack the spacer. Be careful to insert in the proper hole in the proper inserting direction.
PG−A2
3
4CN Option
A connector
Align the two holes of PG−A2 and projections as shown in the detailed side view, first at location (a) and then at (b), and precisely place the card on the option A connector. Insert the spacer mounted at
2 above into the PG−A2 spacer mounting hole. (See part A of the side view.)
Verify that 4CN is precisely aligned to PG−A2. Gently push the card until it clicks.
Spacer mounting hole
Option A
Top
Option A installation spacer
(SRNT41028−9, comes with PG−A2)
Mounting base of inverter
Option C
2CN Option
C connector
3CN Option
D connector
PG−A2
Control board
Option D
Mounting base of inverter
Spacer mounting hole
Control board
Spacer
Mounting base side
Option A side
Installation of spacer
(b)
Connector terminal
(a)
Bottom
Grounding terminal
12
Front view
Details
Side view
Fig. 3 Installation of PG speed control card PG−A2
5
6
3 Interconnection
Fig. 4 shows interconnection between the inverter, PG−A2, and peripheral equipment.
Inverter
L1(R)
L2(S)
L3(T)
VS-616G5
U(T1)
V(T2)
W(T3)
Motor
Output
NOTE
Pulse monitor
+12V
±
10%
20mA max.
Fig. 4 Interconnection diagram
Notes on wiring
S
Separate the control signal wires ( from terminals TA1 and TA2 ) of the
PG−A2 from the main circuit wires and other power cables.
S
Use a shielded wire to connect to the PG. Connect the wire as shown in Fig.
5 to prevent interference by noise. The wire must be 50m or shorter.
Shielded Sheath Armor
To inverter shielded sheath terminal TA2
Insulate these parts with insulating tape.
Never connect.
Fig. 5
Shielded wire termination
4 Wiring
See Table 1 for the functions of the external terminals.
Table
1 External terminals
Terminal block symbol
Pin
No.
1 +12V
2
3
4
5
0V
+
Functions
+12V power supply
(+12V ±5%, maximum current 200mA)*
Shorted betwen and
4 when the inputting by open collector
TA2
6
7
−
+
Pulse monitor outputs
8
− form)
Shielded sheath connection terminal
Remarks for PG
Signal input level
L: +1V or lower
Output voltage:
12V max. ±10%
Output current:
20mA max.
M3.5 screw terminal
* Up to +14V ±5% can be supplied by adjusting variable resistor RV1. RV1 is set to 13.0V at the factory prior to shipment.
7
8
NOTE
Make sure the followings when wiring.
S
To prevent noise, use shielded wire and separate from heavy current circuits
(200VAC or greater) or relay drive circuits. (Wire length to the PG connector must be 50m or shorter.)
S
Connect both ends of the unused wire of the shielded wire to the 0V terminal.
S
Connect the grounding lead wire (E) to pin
12 of the control board of the inverter.
S
Applicable wire sizes for terminal block TA1 are shown below.
[Terminal: MKDS1 series manufactured by Phoenix Contact GmbH &
Co.]
Thin twisted wire
Solid wire
UL
CSA
CSA
[mm
2
]
1
1.5
AWG
16
16
22−16
28−16
28−16
I [A]
12
12
10
10
10
VAC [V]
125
125
300
300
150
5.5 mm
Terminal block TA1 side
Connecting wire end
Notes on selecting cables
Too thick a cable applies pressure to the option card and may lead to failure.
Too thin a cable may lead to imperfect contact or a break in the wire.
5 Interface Circuit
PG power supply
+12V 200mA max.
External terminal
Shorted by open collector input
PG input +
PG input −
Shielded sheath
To shielded sheath terminal on the control board
From PG input circuit
To pulse monitor
External terminal
PG pulse monitor
Vo: +12V ±10%
Io : 20mA max.
Fig. 6 PG input circuit and PG pulse monitor output circuit
Pulse input
9
10
6 Selecting PG
The maximum frequency of PG output pulse that can be detected is 32,767Hz.
Therefore, select a PG that outputs about 20kHz at the motor rotation speed at maximum frequency output.
Motor rotation speed
(r∕min) at max. frequency output
60
× PG constant
(p∕rev)
= 20, 000Hz
Table
2 Examples of PG selection
Motor rotation speed at maximum frequency output
(r/min)
1800
1500
1200
900
PG parameter (p/rev)
600
800
1000
1200
PG output frequency at maximum frequency output
(Hz)
18,000
20,000
20,000
18,000
Notes: S The motor rotation speeds at maximum frequency output are represented as synchronous rotation speeds.
S
PG power supply is +12V.
S
If the PG power capacity is 200mA or greater, provide a separate power supply.
(If momentary power loss ride-through function is necessary, provide backup capacitor or take other necessary measures.)
PG power supply
*
Signal
*
Backup capacitor momentary power loss recovery
Fig. 7
Connection example with PG when using separate power supply
Change durin
Factory Setting
Setting Range
Flux Vec- tor
Open Loop V ec- tor
V/f with PG Feed- back
V/f Con- trol stant No.
11
