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^1
HARDWARE REFERENCE MANUAL
^2
Quad Amp
^3 4-Axis Digital Amplifier
^4 3Ax-602646-xUxx
^5 September 24, 2003
Single Source Machine Control Power // Flexibility // Ease of Use
21314 Lassen Street Chatsworth, CA 91311 // Tel. (818) 998-2095 Fax. (818) 998-7807 // www.deltatau.com
Copyright Information
© 2003 Delta Tau Data Systems, Inc. All rights reserved.
This document is furnished for the customers of Delta Tau Data Systems, Inc. Other uses are unauthorized without written permission of Delta Tau Data Systems, Inc. Information contained in this manual may be updated from time-to-time due to product improvements, etc., and may not conform in every respect to former issues.
To report errors or inconsistencies, call or email:
Delta Tau Data Systems, Inc. Technical Support
Phone: (818) 717-5656
Fax: (818) 998-7807
Email: [email protected]
Website: http://www.deltatau.com
Operating Conditions
All Delta Tau Data Systems, Inc. motion controller products, accessories, and amplifiers contain static sensitive components that can be damaged by incorrect handling. When installing or handling
Delta Tau Data Systems, Inc. products, avoid contact with highly insulated materials. Only qualified personnel should be allowed to handle this equipment.
In the case of industrial applications, we expect our products to be protected from hazardous or conductive materials and/or environments that could cause harm to the controller by damaging components or causing electrical shorts. When our products are used in an industrial environment, install them into an industrial electrical cabinet or industrial PC to protect them from excessive or corrosive moisture, abnormal ambient temperatures, and conductive materials. If Delta Tau Data
Systems, Inc. products are directly exposed to hazardous or conductive materials and/or environments, we cannot guarantee their operation.
Quad Amp Hardware Reference Manual
Table of Contents
Table of Contents i
Quad Amp Hardware Reference Manual
ii Table of Contents
Quad Amp Hardware Reference Manual
INTRODUCTION
The Delta Tau Data Systems, Inc. 4-axis Digital Amplifier (Quad Amp) is a highly compact digital amplifier and power supply, packaged together to provide four axes of bi-directional (four quadrant) torque control for a variety of AC or DC brushless or AC induction motors. All control parameters including switching frequency and dead time are determined by software set-up of the controller, not in the amplifier.
The Quad Amp is designed to work in conjunction with the Delta Tau PMAC2 motion controller, which supports up to eight axes of motion control. The PMAC2 delivers Pulse Width Modulated (PWM) on/off signals to the Quad Amp power transistors. The Quad Amp simply isolates and level-shifts these signals, at the required frequency and magnitude, to obtain the desired torque, velocity, and position.
All feedback is processed by the PMAC2. The Quad Amp measures motor phase currents, digitizes them, and transmits them back to PMAC2 as a serial data stream. Position feedback data is sent directly back to the PMAC2 via the Acc-8F Digital Interface Board. The Quad Amp does not use or require any position data.
Related Technical Documentation
The following technical manuals are required to successfully install and operate the Delta Tau Quad Amp.
These manuals should be included in the technical documentation package received with the Quad Amp.
If any of these manuals are missing, contact Delta Tau before attempting installation.
Manual Number
3A0-602204-363
3A0-602775-363
3A0-602598-363
3A0-602413-363
3A0-602643-363
Manual Title
PMAC User Manual and Software Reference with PMAC2 Addendum
Acc-8F Digital Interface Board User Manual
PMAC2 PC and PMAC2 Lite Hardware Reference Manual
PMAC2 VME Hardware Reference Manual
PMAC2 VME Ultralite Hardware Reference Manual
Safety Summary
The following are general safety precautions not related to any specific procedures and therefore may not appear elsewhere in this publication. These are recommended precautions that personnel must understand, apply, and adhere to during the phases of installation, operation, and maintenance.
Keep Away from Live Circuits
Do not replace components or make adjustments inside equipment with power applied. Under certain conditions, dangerous potentials may exist when power has been turned off due to charges retained by capacitors. To avoid casualties, always remove power and allow 10 to 12 minutes for the bus capacitors to discharge before removing the cover.
Live Circuit Contact Procedures
Never attempt to remove a person from a live circuit with bare hands. To do so is to risk sure and sudden death. If a person is connected to a live circuit, the following steps should be taken:
• Call for help immediately
• De-energize the circuit, if possible.
• Use wooden or fiberglass hot stick to pull the person free of the circuit.
• Apply cardiopulmonary resuscitation (CPR) if the person has stopped breathing or is in cardiac arrest.
• Obtain immediate medical assistance.
Introduction 1
Quad Amp Hardware Reference Manual
Quad Amp Basic Specifications
Physical Specifications
Size (See Figure 1)
• Height: 22.0 Inches
• Width: 10.5 Inches
• Length:
5.125 Inches (without mounting option)
9.031 Inches (with mounting option)
Weight
• 60 lb. (27.3 kg)
Temperature
Storage: -20 degrees C to +85 degrees C
Operating: 0 degrees C to +60 degrees C (Unit is disabled if heat sink temperature exceeds 80 degrees C)
Relative Humidity
10% to 95%, non-condensing
Electrical Specifications
Switching Frequency
7.5 kHz (Nominal)
15 kHz (Maximum)
Cooling
Options 3B, 4, and 4A: Forced Air (Internal)
Options 3 and 3A: Customer supplied (external)
Protection
Fuses:
F201 - Shunt Regulator IGBT and Shunt Resistors
F202 - Logic Power Supply
3-Phase In-Line Circuit Breaker (Optional)
Bus Supply, Control Supply and Shunt Specifications
120V/208V/230V Quad Amplifier Specifications
Main AC Input Voltage/Current (L1, L2, L3)
120 VAC, single phase
Input current/phase, continuous.
208 VAC, three phase
230 VAC, three phase
25 A @ 12.5 HP continuous output
60 A @ 25 HP continuous output
Frequency
72 A @ 33 HP continuous output
50/60 Hz ±2
Control AC Input Voltage/Current (Connector
C3)
(Dependent on Option Ordered)
Input voltage (Selectable)
Min. required input current (RMS)
Frequency
120 VAC (+/- 10 %), single phase
208 VAC (+/- 10 %), single phase
230 VAC (+/- 10 %), single phase
3 A @ 120VAC
1.5 A @ 230 VAC
50/60 Hz ±2
For demo only
2 Introduction
Quad Amp Hardware Reference Manual
Main DC bus Voltage
Internal Shunt Resistor
Resistance
External Shunt Resistor (Optional)
Resistance
170 VDC (120 VAC line input)
(L1, L2)
300 VDC (208 VAC line input)
(L1, L2, L3)
325 VDC (230 VAC line input)
(L1, L2, L3)
15 Ohm
1.8 kW
8.5 Ohm
2.8 kW
1 Sec
3 mH
Soft Start charge time
Minimum output inductance
380/460/480V Quad Amplifier Specifications
Main AC Input Voltage/Current (L1, L2, L3)
Input current/phase, continuous.
380 VAC, three phase
460 VAC, three phase
480 VAC, three phase
10 A @ 12.5 HP continuous output
25 A @ 25 HP continuous output
Frequency
Control AC Input Voltage/Current (Connector
36 A @ 33 HP continuous output
50/60 Hz ±2
C3)
(Dependent on Option Ordered)
Input voltage (Selectable)
Min. required input current (RMS)
Frequency
Main DC bus Voltage
Internal Shunt Resistor
Resistance
External Shunt Resistor
Resistance
Soft Start charge time
Minimum output inductance
120 VAC (+/- 10 %), single phase
208 VAC (+/- 10 %), single phase
230 VAC (+/- 10 %), single phase
380 VAC (+/- 10 %), single phase
460 VAC (+/- 10 %), single phase
480 VAC (+/- 10 %), single phase
3 A @ 120VAC
1.5 A @ 230 VAC
1A @ 380VAC
0.75 A @ 460 VAC
50/60 Hz ±2
537 VDC (380 VAC line input) (L1,
L2, L3)
650 VDC (460 VAC line input) (L1,
L2, L3)
680 VDC (480 VAC line input) (L1,
L2, L3)
30 Ohm
0.6 kW
12.75 Ohm
4.2 kW
1 Sec
3 mH
For demo only
Introduction 3
Quad Amp Hardware Reference Manual
AIR FLOW
USE 1/4-INCH
MOUNTING
HARDWARE
(4 PLACES)
Figure 1 Quad Amp Specifications
Output Specifications for 120/208/230 VAC Amplifier
Up to four blocks (options) can be selected in any power combination. The total power cannot exceed 33
HP.
Note:
When 30HP is selected only two additional axes may be used (three total instead of four).
4 Introduction
Quad Amp Hardware Reference Manual
Continuous
HP(100%)
Opt 5 Opt 6 Opt 7 Opt 8 Opt 9 Opt 10 Opt 11 Opt 12 Opt 13 Opt 14
0.75 HP
0.56 kW
1.5 HP
1.1 kW
2 HP
1.5 kW
3 HP
2.2 kW
5 HP
3.7 kW
7.5 HP
5.6 kW
10 HP
7.5 kW
15 HP
11 kW
20 HP
15 kW
30 Hp
22.5 kW
Continuous current
(RMS)
2 A 4 A 5 A 7 A 15 A 20 A 25 A
Continuous 2 min
HP(200%)
1.5 HP
1.1 kW
3 HP
2.2 kW
4 HP
3 kW
6 HP
4.5 kW
10 HP
7.5 kW
15 HP
11 kW
20 HP
15 kW
Peak 2 sec
HP(300%)
2.25 HP
1.7 kW
4.5 HP
3.4 kW
6 HP
4.5 kW
9 HP
6.7 kW
15 HP
11 kW
22.5 HP
17 kW
30 HP
22 kW
Peak 2 sec current
5 A 12 A 15 A 21 A 36 A 54 A
PWM dead time
2.3 s(PMAC2default) PMAC2 programmable
Output Specifications for 380/460 VAC Amplifier
Up to four blocks (options) can be selected in any power combination.
75 A
The total power cannot exceed 35 Hp.
35 A
30 HP
22 kW
45 HP
34 kW
100 A
50 A
40 HP
30 kW
60 HP
45 kW
150 A
75 A
60 HP
45 kW
90 HP
67 kW
200 A
Note:
When 30HP is selected, only two additional axes may be used (three total instead of four).
Continuous HP
(100 %)
Continuous current
(RMS)
Continuous 2 min
HP (200%)
Peak 2 sec HP
(300%)
Peak 2 sec current
PWM dead-time
Opt 15 Opt 16 Opt 17 Opt 18 Opt 19 Opt 20
2 HP 3 HP 5 HP 10 HP 20 HP 30 HP
2.5 A 3.5 A
4 HP
3 kW
6 HP
4.5 kW
6 HP
4.5 kW
9 HP
6.7 kW
7.5 A 10.5 A
2.3 µs (PMAC2 default)
6 A 12.5 A
10 HP
7.5 kW
15 HP
11 kW
20 HP
15 kW
30 HP
22 kW
18 A 40 A
PMAC2 programmable
25 A
40 HP
30 kW
60 HP
45 kW
75 A
35 A
60 HP
45 kW
90 HP
67 kW
100 A
Introduction 5
Quad Amp Hardware Reference Manual
Protection
There are several layers of protection built into the amplifier, including transient voltage filters, transient surge suppressors, fuses, a flyback diode, and a variety of fault detection circuits. These are discussed in the following paragraphs and in the Troubleshooting Chapter.
Transient Voltage Filter
The transient voltage RC filter is used as a means of suppressing inductive transients and is located across the single phase Control AC input voltage connector C3.
Transient Surge Suppressors
Transient surge suppressors (also referred to as metal oxide varistors or MOVs) are connected across all three input phases (L1, L2, L3) of the Main AC input power. They are located on a circuit board attached to the top of the bridge power rectifier. The primary function of these devices is to absorb high-level energy pulses (spikes).
Fly-Back Diode
The fly-back diode clamps inductive spikes that may be generated across the external shunt resistors when the shunt IGBT is turned off. The diode is connected across the external shunt resistor terminals.
Fuses
The primary hardware protection is fuses, which are mounted within the Quad Amplifier chassis.
Fuse F201
F201 is a 30 Amp long delay fuse, located externally on the top cover of the Quad Amplifier. Fuse F201 is connected to the output of the shunt regulator IGBT and to the internal shunt regulator resistors. Fuse
F201 protects the shunt regulator IGBT and the internal shunt resistors from over current damage.
Fuse F202
F202 is a 4-Amp Slo-Blo fuse located under the Quad Amplifier cover, next to the control AC input power supply transformer. This fuse is connected between incoming AC control input power connector
C3 and control input AC power transformer T201. Fuse F202 protects the primary input windings of the control power supply transformer against overloads.
Ground Fault (GF)
The Ground Fault Detector is a self-powered circuit that continuously samples the AC line currents via a toroid around the incoming three phase lines. If there is more current flowing into the amplifier than out, the ground fault circuit will activate and shut down the Quad Amplifier with a soft start fault.
6 Introduction
Quad Amp Hardware Reference Manual
Configurable Options
Each Quad Amplifier is shipped with an Identification Tag (see Figure 1). The identification tag is attached to the top panel of the Quad Amplifier. It indicates the rating of each axis, the AC operating voltage, and the control input voltage. Since every Quad Amplifier is a custom unit, Delta Tau would like to emphasize that each user should inspect the equipment and see that the correct unit has been supplied.
Contact Delta Tau immediately if there are questions regarding the shipment. The following tables define the Delta Tau part numbers, for the Delta Tau Digital Quad Amplifier and its configurable options.
Part No. Item Description
500-602645-102 Basic Quad Amplifier. Basic Quad Amplifier includes: Fans, built-in shunt and soft start circuits.
301-QADAMP-OPT Quad Amplifier Basic P.S.
Option 1
For 10 HP or less
Power supply 50 amp and small HS
302-QADAMP-OPT Quad Amplifier upgrade
Option 2 voltage upgrade Option 2A
Over 10 HP up to 33 HP
Power supply 100 amp and large HS
380/460 VAC version
Power supply 75 amp and large HS
Note
Must choose either option 1, 2 or 2A with basic quad P/N.
Control Voltage is Selectable:
120 VAC
208 VAC
230 VAC
380 VAC
460 VAC
480 VAC
Power Blocks Item Description
305-QADAMP-OPT Power Block Option 5 10 Amp, 600V *** Block, 0.75 HP Cont.
306-QADAMP-OPT Power Block Option 6 15 Amp, 600V*** Block, 1.5 HP Cont.
307-QADAMP-OPT Power Block Option 7
308-QADAMP-OPT Power Block Option 8
20 Amp, 600V*** Block, 2 HP Cont.
30 Amp, 600V*** Block, 3 HP Cont.
309-QADAMP-OPT Power Block Option 9 50 Amp, 600V*** Block, 5 HP Cont.
310-QADAMP-OPT Power Block Option10 ** 50 AMP, 600V*** Block, 7.5 HP Cont.
311-QADAMP-OPT Power Block Option11 ** 75 Amp, 600V*** Block, 10 HP Cont.
312-QADAMP-OPT Power Block Option12 ** 100 Amp, 600V*** Block, 15 HP Cont.
313-QADAMP-OPT Power Block Option13 ** 150 Amp, 600V*** Block, 20 HP Cont.
314-QADAMP-OPT Power Block Option14 ** 200 Amp, 600V*** Block, 30 HP Cont. *
315-QADAMP-OPT Power Block Option15 10 Amp, 1200V*** Block, 2 HP Cont.*
316-QADAMP-OPT Power Block Option16 15 Amp, 1200V*** Block, 3 HP Cont.*
317-QADAMP-OPT Power Block Option17 25 Amp, 1200V*** Block, 5 HP Cont.*
318-QADAMP-OPT Power Block Option18 ** 50 Amp, 1200V*** Block, 10 HP Cont.*
319-QADAMP-OPT Power Block Option19 ** 75 Amp, 1200V*** Block, 20 HP Cont.*
320-QADAMP-OPT Power Block Option 20 ** 100 Amp, 1200V*** Block, 30 HP. Cont. *
Note
Mounting Options Item
303-QADAMP-OPT External
Option 3 mounting mounting
Option 3A
3B3-QADAMP-OPT External mounting opt
Option 3B mounting
Option 4 mounting
Option 4A
Description
Used with basic (Opt 1) Quad Amplifier, under 10 HP. Includes Fan and Shunt R.
Used with up-graded (Opt 2) Quad
Amplifier over 10 HP. Same as above
Does not include cooling fans or internal shunt resistor.
Used with basic (Opt 1) Quad Amplifier, under 10 HP.
Used with up-graded (Opt2) Quad
Amplifier, over 10 HP.
Note
For use when mounting HS external to cabinet
Same as above.
For use when mounting
Amplifier HS in plenum.
Foot Mounting to cabinet panel
Same as above.
Introduction 7
Quad Amp Hardware Reference Manual
Accessories Item Description Note
3A1-602582-100
3A2-602582-100
200-602739-024
Circuit Breaker
Circuit Breaker
PWM Input Cables
50 Amps 450 VAC 3 Phase
70 Amps 250 VAC 3 Phase
36” long cable with DB36 pin mini connectors at each end
With external trip
NA
Two required per Acc-8F.
Connects between Quad
Amplifier and Acc-8F
3A0-602757-100 External 4.25 Ohms 1400 Watts each.
25” long 2” diameter Edge-Power resistor.
Open Frame
Two required for 208/230 Quad
Amplifier. Three required for
380/460 Quad Amplifier.
Connected in series.
3AO-602775-10X ACC8F Interface Circuit Board
Used to connect Encoders to PMAC.
Two required per Quad
Amplifier. Not required if
PWM MACRO station is used.
*
**
When 30 HP is selected, only two additional axes may be used (three total, not four).
When a total of 7.5 HP or greater is selected, use Acc-4 (external shunt resistors).
*** 600V/1200V indicates VDC rating of the igbt and has no connection to the main AC input (operating) voltage.
8 Introduction
Quad Amp Hardware Reference Manual
GETTING STARTED
Receiving and Handling
Inspection upon Receipt
Upon the receipt of equipment, inspect all merchandise for any indication of damage that may have incurred during shipping and handling. If any items are damaged, do not accept them until the freight carrier makes an appropriate notation on the freight bill or express receipt. Claims for loss or damage in shipping must be taken up with the shipping or freight carrier.
Storage Requirements
Store the equipment in a clean environment until ready for installation. It is advisable to leave the equipment in its original shipping container until ready to use.
Prior to Installation
Each amplifier is carefully checked before shipping. However, upon receipt, make sure that the Quad
Amplifier received corresponds to, or is properly rated for, the voltage and current of motors that are to be driven. The Quad Amplifier identification tag specifies the electrical ratings of each axis.
CAUTION:
It is important to double check the part number and serial number against the order form to avoid damage that may be caused by the misapplication of the digital Quad
Amplifier.
Equipment Required
The Quad Amplifier is installed in conjunction with other Delta Tau Data System components to form a
Quad Amplifier System. The following table identifies the equipment which, when installed and connected together, constitute a typical Quad Amplifier System. Figure 2 shows the interconnection of the Quad Amplifier System components.
Component Quantity
Quad Amplifier
PMAC2 or PMAC2 Lite
Acc-8F
Acc-8F, Opt 5
Motors
1
1
1 - 2
1 to 4
1 to 4
Description
Delta Tau 4-Axis Digital Quad Amplifier
Delta Tau 4-Axis Controller Card
Delta Tau Digital Interface Board (one 16-inch cable is included with each Acc-8F to connect with the PMAC2)
36-inch Delta Tau PWM input cables
Customer-supplied AC induction or brushless servo motors
Installation Considerations and Options
The design of the Delta Tau Quad Amplifier allows for either internal chassis mounting or external chassis mounting. In either case, the unit can be mounted either horizontally or vertically. Vertically is the preferred mounting.
Option 3, 3A and 3B (External Mount)
Options 3, 3A and 3B are designed for external chassis mounting. These are used when the Quad Amplifier heat sink (cooling fans and internal shunt resistor included with Options 3 and 3A) is externally mounted through an electrical cabinet opening or when the Quad Amplifier heat sink is mounted in an air plenum
(Option 3B) with external, customer supplied forced air and optional external shunt resistors (Acc 4).
Option 4 and 4A (Internal Mount)
Options 4 and 4A provide mounting feet and self-contained cooling fans. These are used when the Quad
Amplifier is to be mounted to a panel, in a Hoffman style electrical box. Consider the following, before the Quad Amplifier is installed in a cabinet:
Getting Started 9
Quad Amp Hardware Reference Manual
Heat Dissipation
The external mounting options (Opt3, Opt3A and Opt3B) allow the Quad Amplifier to be installed inside a cabinet, with the Quad Amplifier heat sink mounted external to the cabinet or in an air plenum. In the case of Opt 3B, provide good air circulation, in a plenum, with a minimum airflow across the heat sink of
70 CFM. Cooling should also be based on the whole system cabinet temperature not exceeding 45 o C
(113 o F), as well as providing good airflow across the Quad Amplifier heat sink.
The internal mounting options (Opt4 and Opt4A) are self-contained, stand alone packages. They include cooling fans and a built-in shunt regulator, with internal shunt resistors for small motor loads of under 10
HP. To ensure long-term reliability, the ambient temperature of the cabinet should not exceed 45 o C.
E N C O D E R
S IG N A L S
M O T O R
C A B L E
M O T O R
C A B L E
A X I S 2
A X I S 1
M O T O R
C A B L E
Q U A D A M P
( B O T T O M V I E W )
A X I S 4
M O T O R
C A B L E
E N C O D E R
S IG N A L S
8F CAC
A C C - 8 F
A X I S 3
A X I S 1 & 2
A X I S 3 & 4
P M A C 2
J 1 0 J 9
Figure 2 Quad Amplifier Interconnection Diagram
Multiple Units
When more than one Digital Quad Amplifier is installed in a limited area, such as an electrical box, always mount the amps side by side, and allow 3 inches (8 cm) between amplifiers. Do not stack the
Quad Amplifiers.
Vibration
When the Quad Amplifier is installed near a source of excessive vibration install an isolation device underneath the Quad Amplifier.
10 Getting Started
Quad Amp Hardware Reference Manual
THEORY OF OPERATION
Operation
The Quad Amplifier is a universal 4-axis 3-phase direct PWM drive which utilizes the latest in smart power technology from the world’s leading vendors and the cutting edge algorithms of the new PMAC2 controller family. The Quad Amplifier is capable of driving all of the motor types commonly used in programmable motion control in both rotary and linear forms.
The Quad Amplifier is based on PWM (Pulse Width Modulation) which is a technique employing both frequency and phase to approximate sinusoidal currents and to control AC and DC motors.
Each axis of the Quad Amplifier uses a three H-bridge legs scheme. Each leg employs top and bottom
IGBT transistor. The motor windings are connected between the center points of top and bottom pairs.
When two appropriate IGBT transistors in the bridge are turned on, the current flows through any two motor windings. Any two (top and bottom) bridge transistors are turned on by a logic from PMAC2 with no other conditioning necessary, except an optical isolation. The Quad Amplifier performs no control functions itself; it simply accepts direct PWM commands from the PMAC2. PMAC2 requires the position feedback and the feedback about the current fed to the motors to commutate each controlled axis.
The current feedback is provided in digital form as a part of a serial data stream of 18-bits (12 bits report the current feedback and remaining 6-bits report fault conditions) from the current feedback A/D converters which are located in the Quad Amplifier. Each axis has its own mask word that tells the
PMAC2 how many bits to expect from the A/D converter. The clock and the strobe for the digital feedback are programmable at the PMAC2.
The position feedback in the form of quadrature A, B and C and/or ChU, ChV, ChW and ChT generally is fed to PMAC2 via Acc-8F. The position feedback is not connected to the Quad Amplifier in any way.
Configuration
The Quad Amplifier consists of the following:
• One main logic board (I/O)
• One 4-axis current sense board
• One firing board for each IGBT power device. One for each axis, four axes maximum.
• One soft start and shunt regulator board
• One DC bus power supply
Logic Board
The Logic Board (I/O) acts as link to PMAC2 (via Acc-8F) and has several functions (All signals arrive/and leave the logic board through a separate mini DB36 connector for each axis):
1. Differential PWM signals are opto-isolated and sent directly to the firing boards.
2. All the control signals for the current sense board are transmitted to the current sense board via a flat
60-pin cable. The digitized current feedback is routed back from the current sense board via the same cable and is passed to PMAC2 through a mini-D36 connector.
3. The Logic Board processes Amp Enable and Amp Fault signals for all four axes. The Amp Enable is a differential pair and a separate line is supplied from PMAC2 for each axis. The default polarity of
Amp Enable is positive true. A high on AENA+ and a low on AENA- will enable the Quad
Amplifier. In the event of a failure, the Quad Amplifier will drive the Amp Fault line positive true and send the fault signal to PMAC2.
4. It provides protection against various Quad Amplifier fault conditions and it displays a condition of the Quad Amplifier via an LED Fault Indicator on the Current Sense board (see Fault Detection and
Fault Codes section in this manual).
Theory of Operation 11
Quad Amp Hardware Reference Manual
Current Sense Board
The Current Sense Board has eight Hall Effect (LEM) modules for current sense and eight on-board A/D converters that transform four channels of motor current to digital form. Each channel provides information on two phases (A phase and B phase). The third phase is mathematically created in the
PMAC2.
Firing Boards
The firing boards receive their signals directly from the PMAC2 through the Logic board differential receivers and turn appropriate top and bottom IGBT on to allow current flow through a motor phase
(winding). The PWM signals are opto-isolated before they reach the IGBT firing pins. The firing pulses for each IGBT transistor are differential to increase noise immunity. To avoid ground loops and accidental IGBT turn-on, each firing board is equipped with an isolated power supply.
Soft Start and Shunt Regulator
The Soft Start and Shunt Regulator circuit board’s function is to provide soft charge and shunt regulation for the Quad Amplifier. It consists of a main board (602800-1) and a dual split gate drive power supply piggy board (602801-1) that mounts on the main board with plastic screws and standoffs.
The Soft Start and Shunt Regulator Main and Shunt set points (when main IGBT and shunt IGBT turn on) are set as a percentage of the nominal bus voltage for the actual AC line voltage. Therefore, set points move automatically with the line voltage. This allows operation at any line voltage above 30 VAC and prevents shunt damage under high line conditions. A condition above 250/500 VAC will cause a high line fault, which will prevent operation of the Quad Amplifier. Over voltage is set at 410/820 VDC and can be factory set lower with R2.
If there is an absence of logic power (+/- 15V), the split gate drive power supply will not be able to power the K1 relay and bus voltage is prevented from coming up because the main and soft start IGBT gates and emitters are shorted via the K1 relay (NC) contacts.
Soft Start
If there is no 3-phase line voltage (VAC) present, a No Line fault condition prevents momentary main operation on power-up before line sense levels are up. Once 3-phase line voltage is applied, the No Line fault is cleared by a clear fault pulse, which comes from Quad Amplifier logic board upon issuing an
Enable command. When Enable is issued, the Soft Start IGBT will turn on and charge the bus capacitors via Soft Start resistor (100 Ohm, 50 Watts). After the bus capacitors are charged to 80% of the nominal bus voltage for the AC line, the main IGBT will turn on, bypassing the Soft Start resistor.
Shunt Regulator
When the bus voltage rises to 114 % of the nominal bus voltage for the AC line due to a deceleration of a motor, the shunt IGBT turns on and connects the shunt resistor across the bus until the bus voltage drops to normal. The value of 114% was selected so that even at 250 VAC (about 353 VDC bus) the shunt regulator will turn on at approximately 400 VDC before the over voltage (410VDC) trips.
DC Bus Power Supply
The AC Input voltage from L1, L2, and L3 is rectified into a DC bus voltage. The DC Bus Power Supply consists of a three-phase rectifier bridge and an IGBT switch. The 208/230 VAC amplifier has a 15 k
Ohm bleeding resistor and six 1,800 µF filter capacitors, connected in parallel. The 380/460V Quad
Amplifier utilizes a serial/parallel configuration of six filter capacitors and two 15 k Ohm bleeder resistors in series across + Bus and – Bus.
12 Theory of Operation
Quad Amp Hardware Reference Manual
Heat Dissipation
The capability of the Quad Amplifier and the IGBT modules is based upon the heat they can dissipate; the more quickly heat can be removed from the IGBT module, the more current it can handle. Heat is created whenever an IGBT is turned on or off. These transitions are called switching losses. Whenever current is flowing, the switching losses represent a sizable and unavoidable part of the heat generated by the Quad
Amplifier. Since the switching losses occur on transitions and the transitions are a function of frequency, a lower PWM frequency can mean a cooler amplifier capable of more power and a higher PWM frequency will result in more heat and less overall deliverable power to the motor.
Of course, simply lowering the PWM frequency will not produce optimal results on all motors. Low inductance motors, for instance, require a higher frequency. In addition, high frequency PWM can reduce velocity ripple on small motors. The choice of a PWM frequency is application dependent and entirely programmable on the Delta Tau Digital Amplifier. Similarly, this facility must be taken into consideration when choosing a power rating for your application.
Shunt Considerations
CAUTION:
The Quad Amplifier has an internal shunt regulator with dumping resistors. These are not sized for a particular load and may not be adequate for any particular application. These internal shunt resistors are nominally capable of dumping 25 amps at low duty cycle (<25%). If the application has a high duty cycle or requires more shunt dumping, an external shunt resistor will be necessary.
Depending upon the application, a shunt regulator is often necessary to dissipate the energy regenerated into the DC bus by the stored kinetic energy of the motor and reflected load, during deceleration. The components in the amplifier are rated for 410VDC/820VDC respectively. When the motor with load decelerates, it can act as a generator, pumping current back into the DC bus instead of from it, thereby raising the bus DC voltage. This problem is magnified for large spindle or high inertia applications that must be brought to a halt in a very short time. Care must be taken to see that DC bus voltage does not exceed 410VDC/820VDC. If DC bus voltage exceeds 410VDC/820VDC, nuisance over voltage may occur and the amplifier could be damaged.
To prevent this, the shunt should be able to draw as much current from the DC bus as the motors are capable of putting into it. The faster the motors are decelerated the greater the current. A spindle motor using 60 amps continuously will require a shunt that can dump at least that much current. Refer to the
Delta Tau Soft Start and Shunt Resistor circuit board section of this manual for more information.
Theory of Operation 13
Quad Amp Hardware Reference Manual
14 Theory of Operation
Quad Amp Hardware Reference Manual
INSTALLATION
Wiring the Quad Amplifier System
Quad Amplifier Channel Connections
The Quad Amplifier channels must be connected in a particular order for proper operation. It is essential that the timing of all signals associated with the Quad Amplifier logic board shares the ADC converter clocks for Quad v channels 1-2 and channels 3-4. The ADC clocks are generated from the gate array associated with the axis channel on the PMAC. Each PMAC Gate Array controls four axis channels.
Therefore, make sure to connect Quad Amplifier channels 1 and 2 or channels 3 and 4 to the same PMAC channels associated with the same ADC clock Gate array. Faulty operation or even amplifier failure may occur if the user mixes Gate Array channels on either Quad Amplifier channels 1-2 or 3-4. The following chart lists the possible combinations for proper Quad Amplifier operation.
Two Quad Amplifier Example
PMAC Axes
Configuration 1
Configuration 2
Configuration 3
Configuration 4
Configuration 5
Configuration 6
Quad AMP 1
Channels 1-2
A
A
A
B
B
B
Quad AMP 1
Channels 3-4
A
B
B
A
A
B
(A) Can have the following PMAC Axis configuration (GATE 0)
1-2 or 3-4
1-3 or 2-4
1-4 or 2-3
(B) Can have the following PMAC Axis configuration (GATE 1)
5-6 or 7-8
5-7 or 6-8
5-8 or 6-7
Quad AMP 2
Channels 1-2
B
A
B
B
A
A
Quad AMP 2
Channels 3-4
B
B
A
A
B
A
Typical Quad Amplifier Setup
A typical Quad Amplifier setup would have all the PMAC axes associated with the corresponding Quad
Amplifier channels. For this example, PMAC axes 1, 2, 3 and 4 are connected to the first Quad Amplifier and axes 5, 6, 7, and 8 are connected to the second first Quad Amplifier.
QUAD
AMP
#1
QUAD
AMP
#2
* Quad Amp
channels 1-2 and
3-4 share ADC
clocks
1 3 4 2 1 3 4 2
3 4
1 2
PMAC AXES
Figure 3
7 8
5 6
Installation 15
Quad Amp Hardware Reference Manual
Non-Standard Quad Amplifier Setup
This example shows the Quad Amplifier setup with PMAC axes 1, 2, 7, and 8 are connected to first Quad
Amplifier #1 and PMAC Axes 3, 4, 5 and 6 are connected to first Quad Amplifier #2. Since first Quad
Amplifier channels 1-2 and 3-4 share ADC clock signals, the PMAC channels connected to these amplifier channels must be generated at the same Gate Array.
QUAD
AMP
#1
QUAD
AMP
#2
* Quad Amp
channels 1-2 and
3-4 share ADC
clocks
1 3 4 2 1 3 4 2
7 8
1 2
3 4
5 6
PMAC AXES
Figure 4
Accessory Terminal Board (Acc-8F, Acc-24E2)
Each Quad Amplifier requires one or two Acc-8F accessory terminal boards to interface to the PMAC2.
The Acc-8F boards provide easy and straightforward connections between the Quad Amplifier and the
PMAC2, as well as to the encoders. The cables required to connect the Acc-8F to the PMAC2 PC are provided with each Acc-8F. Refer to the PMAC2 Acc-8F User Manual.
PWM Input Cables
36-inch PWM input cables (Acc-8F, Opt 5) are available from Delta Tau Data Systems, Inc. One cable is required for each PWM axis.
Connectors
All Quad Amplifier connectors are identified in Figures 5 and 6 . The signal connections between PMAC2 and Acc-8F are marked as Axis 1 through Axis 4 on the first Quad Amplifier bottom panel. The detailed pin-outs and signals between the Acc-8F and the first Quad Amplifier are shown in the table following
Figure 6.
Connecting Power Devices
Warning:
Read this section carefully before attempting to wire the connectors or apply main power to the first Quad Amplifier.
Figure 5 is a typical wiring schematic showing the main power circuits and Figure 6 is an example of how to connect the first Quad Amplifier to the peripheral power devices. Delta Tau recommends the use of the following power and safety devices to ensure long amplifier life and reliability.
• Circuit Breaker
• Line Filter
• Magnetic Contactor
16 Installation
Quad Amp Hardware Reference Manual
SHUNT
BUS-
CHASSIS
GROUND
BUS+
L3
L2
L1
OPTIONAL
EXTERNAL
SHUNT
1
1
1
C1
C2
C3
E-STOP/READY
EXTERNAL
GROUND
FAULT TRIP
CONTROL
AC VOLTAGE
MOTOR
GROUNDS
TOP VIEW
MOTOR CABLES
AXIS 2
AXIS 1
AXIS 4
AXIS 3
1 2 3 4
W V U W V U W V U W V U
AXIS 1 AXIS 3 AXIS 4 AXIS 2
MOTOR
OVERTEMP
CONNECTOR
CONNECT
TO ACC-8F
BOTTOM VIEW
Figure 5 and 6 Quad Amplifier Connector Locations
Installation 17
Quad Amp Hardware Reference Manual
27
28
29
30
31
32
Pin# Symbol Function Description
4
5
6
1 Fc_A1 Input
2 Fc_C1 Input
3 Clk0+ Input A/D Convert Clock
Convert0+
Atddaa1+
Atddab1+
Input
Output
Output
A/D Convert Strobe
Chan A ADC Serial Data
Chan B ADC Serial Data
7
8
9
10
11
12
13
14
Aena1+
Fault1+
Pwmatop1+
Pwmabot1+
Pwmbtop1+
Pwmbbot1+
Pwmctop1+
Pwmcbot1+
Input
Output
Input
Input
Input
Input
Input
Input
Amp Enable
Amp Fault
Phase A Top CMD
Phase A Bottom CMD
Phase B Top CMD
Phase B Bottom CMD
Phase C Top CMD
Phase C Bottom CMD
16 Pmac_+5
Reference
Power
17 NC
18 NC
19 Fc_B1 Input
20 Fc_D1 Input
21 Clk0- Input A/D Convert Clock
22
23
24
Convert0-
Atddaa1-
Atddab1-
Input
Output
Output
A/D Convert Strobe
Chan A ADC Serial Data
Chan B ADC Serial Data
25 Aena1- Input Amp
Pwmatop1-
Pwmabot1-
Pwmbtop1-
Pwmbbot1-
Pwmctop1-
Pwmcbot1-
Input
Input
Input
Input
Input
Input
Phase A Top CMD
Phase A Bottom CMD
Phase B Top CMD
Phase B Bottom CMD
Phase B Top CMD
Phase C Bottom CMD
34 (X)Pmac_+5 Input +5V
35 NC
36 NC
Notes
Positive Enable
Negative True Fault
18 Installation
Quad Amp Hardware Reference Manual
Figure 7 Quad Amp Main Circuit Wiring Diagram
Main AC Input Power
Connect desired main input power to input terminals marked L1, L2, and L3 (see Figure 7). The power ground can be connected at the terminal marked CHAS GND or at the grounding screw, marked E, located on the end panel of the Quad Amplifier chassis. The main input power terminals are rated for 600V and 85
Amps.
Control AC Input Voltage
Connect single-phase input power to pins 1 and 2 of AC input connector C3 marked CONTROL AC
INPUT PWR, located on the top panel of the Quad Amplifier (see Figure 7). Pin 4 of connector C3 is used for ground (green wire). If the input power requirements have changed since the Quad Amplifier order, the
Control Power Transformer (T201), located under the Quad Amplifier cover, must be reconfigured for proper operation (see Figures 7 and 8).
Note:
Control AC Input voltage is factory set in accordance with the ordering information.
For 120VAC Operation
Jump pin 1 to pin 5 and jump pin 2 to pin 6. Power is applied to pins 1 and 2 via AC input connector C3.
For 208VAC Operation
Jump pin 1 to pin 5 and jump pin 3 to pin 7. Power is applied to pins 1 and 3 via AC input connector C3.
For 230VAC Operation
Jump pin 1 to pin 5 and jump pin 4 to pin 8. Power is applied to pins 1 and 4 via AC input connector C3.
For 380 VAC Operation
Jump pin 4 to pin 5 and pin 6 to pin 9. Power is applied to pins 1 and 10 via AC input connector C3.
Installation 19
Quad Amp Hardware Reference Manual
For 460 VAC Operation
Jump pin 4 to pin 5. Power is applied to pins 1 and 8 via AC input connector C3.
For 480 VAC Operation
Jump pin 4 to pin 5 and pin 8 to pin 9. Power is applied to pins 1 and 10 via AC input connector C3.
Figure 8 120V/208V/230V Quad Amplifier Transformer T201 Schematic Diagram
20
Figure 9 380V/460V/480V Quad Amplifier Transformer T201 Schematic Diagram
Installation
Quad Amp Hardware Reference Manual
Bus Power Enable/Emergency Stop
CAUTION:
Any wiring should be attempted only after the drive has been isolated from the main
AC supply and 10 to 12 minutes has elapsed to allow the internal bus capacitors to discharge.
The normally open (NO) Main AC Contactor auxiliary contacts must be wired and connected to Connector
C1 pins 1 and 2, otherwise the Quad Amplifier will not power up. Connector C1 is located on the top of the
Quad Amplifier (See Figure 9)
Shunt and Bus
Resistor terminals are provided so that the user can connect an external shunt resistor to the Quad Amplifier
(See Figure 10). The shunt resistors should be a resistive (non-inductive) load of appropriate power and voltage rating for the bus and the regenerative load. External shunt resistors are available from Delta Tau as
Quad Amplifier Acc-4. These resistors (two 4.25 ohm, 1400W resistors for 230 VAC operation and three
4.25 ohm, 1400W resistors for 380/460 VAC operation), when connected in series (8.5 ohms total), will dump over 45 amps.
Bus
Along with the BUS- terminal, these terminals may be used to power external servo amplifiers. Consult
Delta Tau Data Systems Technical Assistance for information concerning external servo amplifiers. .
Bus Filter/Indicator
The bus filter/indicator board is mounted to the Bus+ and Bus- power bars, which are located between Axis
1 and 3 and Axis 2 and 4 output blocks inside of the Quad Amplifier. The bus filter/indicator board is equipped with a neon light that illuminates when bus voltage is present. If the Main AC Power is turned off, the neon light will stay lit until the bus voltage discharges to about 80 VDC.
Motor Wiring
The motor cable wire gauge for each axis must be sized to handle the continuous output current of the axis to which it is connected.
Motor Over-Temp Sensor
The output pins of the 9-pin DIN connector, located on the end panel of the Quad Amplifier, must be connected to the motor over-temp switches. If this connector is not connected to the motor over-temp switches, it must be jumpered with a Delta Tau supplied termination connector for normal Quad Amplifier operation.
Jumpers, Potentiometers, Test Points, and LEDs
There are configurable jumpers, potentiometers, test points, and LEDs on the circuit boards inside the Quad
Amplifier. The jumpers are factory set to each customer’s specifications and usually do not need to be changed. Figures 10 through 12 show the locations of these jumpers, potentiometers, test points, and LEDs.
The following tables list the default jumper settings, the Soft Start board potentiometer factory settings and test point voltages, describe the LED indications for each board.
Installation 21
Quad Amp Hardware Reference Manual
3 1 2 1 3 2
Figure 10 Logic I/O Board Jumper and LED Locations
Name Position
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
Description
LED Symbol
D19
D20
D21
D22
D50
D55
D5
D6
D7
D14
D15
D16
D17
D18
Description
+ 15 V
+ 5 V
- 15 V
AXIS 1 FLT
AXIS 2 FLT
AXIS 3 FLT
AXIS 4 FLT
AXIS 1 EN
On when + 15VDC logic power is present
On when + 5 VDC logic power is present
On when - 15 VDC logic power is present
On when Axis #1 faulted
On when Axis #2 faulted
On when Axis #3 faulted
On when Axis #4 faulted
On when Axis #1 is enabled
AXIS 2 EN
AXIS 3 EN
AXIS 4 EN
PWR GOOD
On when Axis #2 is enabled
On when Axis #3 is enabled
On when Axis #4 is enabled
On when all logic powers are at the proper level
GOT ENABLE On when any AXIS ENABLE signal is received at the Logic PCB
VNI On when + 15 VDC logic power for output IGBTs is present
Default
Open
Open
Open
Open
Open
Open
Open
Open
22 Installation
Quad Amp Hardware Reference Manual
Figure 11 Current Sense Board Jumper and LED Locations
Name Position Description
E1A-E4A IN Enable Serial Fault Data, Phase A
OUT
E1B-E4B IN Enable Serial Fault Data, Phase B
OUT
E5 IN Clock Polarity
OUT
E6 IN Convert Polarity
OUT
Default
Open
Open
2 and 3 Jumpered
2 and 3 Jumpered
D5
D6
D7
+ 5 V
+ 15 V
- 15 V
On when + 5Vdc logic power is present
On when + 15Vdc logic power is present
On when - 15Vdc logic power is present
Installation 23
Quad Amp Hardware Reference Manual
Figure 62 Soft Start Board Jumper, Potentiometer, Test Point, and LED Locations
Name Position
E1 1-2 jumper
Description
Internal Power Supply Connection
Default
Symbol`
TP2
Description
R4 & TP5 High line fault set point
R2 & TP4 Over voltage fault set point
TP3 Shunt IGBT turn-on set point
Main IGBT turn-on set point
Tp Factory Set
5.2/10.4 V
4.1/8.2 V
3.7V @ 230 VAC
2.75V @ 230VAC
Note: Main and shunt set points are line sensitive and will vary with line voltage.
Notes
High line trips at 255/510 VAC
O/V trips at 410/820 VDC
Shunt turns on at 114% of the nominal bus voltage
Main IGBT turns on at 80% of the nominal bus voltage
LED Symbol
D25
D12
D7
D29
D27
D21
D22
D26
D28
L/LOW
L/HI
GND
BIAS
OPEN
SHNT
RDY
NOLINE
DSAT
Description
Low Line, on when line voltage is below 30 VAC
High Line, on when line voltage is above 255 VAC
GND Fault, on if GND fault detected by Quad Amplifier logic board
Gate drive/bias fault, on if the gate drive supply fails
Open contacts fault, on when no main AC contactor auxiliary contacts are not wired to QA or not working properly
Shunt, on when the shunt regulator is on
Ready, on when no fault condition
No Line, on when no 3-phase line present
De-saturation fault, on when current surge across the main IGBT or Shunt
IGBT is detected
24 Installation
Quad Amp Hardware Reference Manual
Grounding
General
It is important to follow some precautions to avoid ground loops or unwanted electrical noise disturbances.
• All signal cables must be shielded.
• Two or more power wires in the same sleeve must be twisted and shielded.
• A shield that does not carry current can be connected at both ends
• A cable with low power electrical signals should never run in the same proximity of high power cables.
Main Power Supply (DC Bus)
The Quad Amplifier chassis must be connected to earth (ground). A ground screw, designated E on the
Quad Amplifier, has been provided for this and is located on the top panel of the amplifier.
Motor
Each motor housing must be connected to Chassis Ground. A Chassis Ground terminal is provided for each motor at the motor output terminal block. Motor leads should be shielded to help avoid stray electrical noise and electrical radiation.
PMAC2 I-Variables Setup
Reference the PMAC2 Family Addendum to the PMAC User Manual and Software Reference for information on how to set up all the I-variables and other necessary parameters. The preferred method for tuning the amplifier is to use the P2 Setup software package available from Delta Tau. There are several
PMAC2 I-variables we emphasize for proper operation of the Quad Amplifier.
Ix00
This parameter determines whether a motor is active (Ix00=1) or inactive (Ix00=0). An active motor may be enabled (either in open or closed loop) or disabled, depending on commands or events.
Ix01
Must be set to 1 to enable commutation for any motor connected to the Quad Amplifier.
Ix02
Must contain the address of the A output register for the machine interface channel n used to connect to the amplifier. Usually, channel number n equals motor number x. The default values of Ix02 are valid when n
= x.
Ix25
Must contain the address of the flag register for the machine interface channel n used to connect to the
Amplifier. The same interface channel number must be used for the flags and the command outputs!
Default values for Ix25 are valid when n = x.
Ix82
Must contain the address of the B current feedback register for the machine interface channel n used to connect to the amplifier. Usually, channel number n equals motor number x. The default values of Ix82 are valid when n = x.
I900
I900 controls the maximum phase clock frequency for PMAC2 and the PWM frequency for machine interface channels 1-4. Refer to PMAC2 Family Addendum to User Manual and Software Reference for further information. If I900 is accidentally set above approximately 15 kHz, the Quad Amplifier will disable all enabled axes and the LED display will show a code 9.
Installation 25
Quad Amp Hardware Reference Manual
Note:
The Quad Amplifier has a built-in protection against accidentally setting I900 (PWM frequency) too high, and exceeding the PWM input frequency rating of the power blocks.
I9n6
For machine interface channel n, I9n6 must be set to 0 to select PWM output format. If i9n6 is set to 1 or 3 while a ‘n’ axis is enabled, Quad Amplifier will disable all enabled axes and the LED display will show code ‘A’. Also, if i9n6 is set to 1 or 3 and then an ‘n’ axis is enabled, all enabled axes will disable and the
LED display will show ‘A’ as well. I9n6 is a variable specific to an axis, but because of its importance,
Quad Amplifier fault circuits treat it as a global variable. Therefore, if a user assigns an M-variables to
PMAC2 Gate Array registers x:$0710,8,4 through x:$0713,8,4 to monitor Quad Amplifier condition, and sets i9n6 accidentally to 1 or 3 and then enables ‘n’ axis, all M variables will report a fault code ‘A’.
Note:
The Quad Amplifier has a built-in protection against accidentally setting I9n6
(Output select mode) to DAC mode (I9n6=1 or I9n6=3).
Start-Up Procedures
Before the main power is applied to the Quad Amplifier, check the following:
1. Verify the AC line voltage is corrected for the model of Quad Amplifier being used.
2. Check that motors and encoders are properly wired and grounded.
3. Ensure the PMAC2 I-variables are set as described above.
Power On Sequence
1. Ensure E-Stop Plug (C1) is wired to the normally open auxiliary switch of the Main AC Power
Contactor.
2. Energize the circuit breaker/disconnect to apply power.
3. Energize Main contactor. LED fault indicator should display E at this point. Issue a <o0> from the terminal window of PEWIN or P2 Setup. LED Fault indicator display should change to C. Allow 1 to 2 seconds for the Quad Amplifier Soft Start circuit to charge the DC bus capacitors. another command will enable the appropriate axis and the LED fault indicator will show
0.0 (everything OK, axis enabled). The Quad Amplifier is now ready for use.
5. Set up PMAC2 for digital current loop control of the Quad Amplifier and a motor using the P-2 Setup program. Save the PMAC2 configuration.
P2Setup
The P2Setup program is essential for making the Quad Amplifier work with PMAC. The user should not attempt to use the Quad Amplifier without P2Setup.
P2Setup Functions
P2Setup performs the following functions:
• Tests current sensors and ensures they are in proper working condition.
• Tests encoder and ensures proper commutation feedback is available.
• Tunes the current loop to the desired performance parameters.
• Phases the motor for servomotors, magnetization current, and slip gain tuning for induction motors.
• Calculates PMAC2 current protection parameters for Quad Amplifier and motors (reference Table 4-9).
• Tunes the position and velocity loop.
26 Installation
Quad Amp Hardware Reference Manual
During this tuning process, P2Setup also determines the commutation parameters and commands the
PMAC appropriately.
Power Block Option Continuous Hp Continuous
Current (A)
208/230 VAC
Peak Current
2 Sec (A)
Max ADC Value
9 5 15 36 45
380/460 VAC
Enter Max ADC value in P2-Setup, step Current Protection. Enter Peak Current and Continuous Current values, if applicable.
F.A.Q
1. PWM Frequency – The default value suggested by P2Setup (4.5 kHz) works well for most applications. If more heat is generated in the motor than the amplifier, using a higher PWM frequency may assuage this problem. a. Set up a Lower Voltage Motor with the Quad Amplifier. The following steps should be followed in P2Setup to ensure that the appropriate voltage is used for the motor while using the
Quad Amplifier:
After PWM frequency and Phase and Servo frequencies have been set up successfully, click the
Terminal Window tab.
Modify Ix66 using the following formula:
Ix 66
=
I 900 * Motor _ peak _ voltage
Quad _ Amp _ Bus _ Voltage
Installation 27
Quad Amp Hardware Reference Manual
28 Installation
Quad Amp Hardware Reference Manual
TROUBLESHOOTING
Logic Fault Detection and Fault Codes
The Quad Amplifier is capable of detecting and reporting a variety of fault conditions. These conditions are broken into two types: axis-specific and global.
Axis-Specific Faults
This type of fault is related to one axis only and typically is not something that would prevent the amplifier as a whole from continuing to operate. These faults are specific to the modules or motors and involve temperature (module or motor), low level ground fault, and over or under current. These faults only disable the axis involved (when they occur and remain active), preventing the axis from being enabled until they actually disappear.
Global Faults
The second type of fault concerns elements critical to the entire amplifier. These faults include heat-sink over-temperature, general power supply faults, bus over-voltage etc. These faults are transient and are latched in the Xilinx gate. The entire amplifier is disabled and remains so, with the fault displayed, until the controller attempts to re-enable it. If the cause of the fault has been remedied, the fault is cleared from the display and PWM is sent to the IGBT modules. If the cause of the fault has not been removed, the amplifier will fault again and disable.
Fault Reporting
Fault conditions are reported in two places. First, the on-board (current sense board) LED displays the fault code as a hexadecimal digit. Second, the fault code is attached to the end of the serial A/D converter data stream being sent to PMAC2 on the A channel of each axis. There is also a fault LED associated with each axis that will illuminate in the case of a fault on the associated axis.
Serial Fault/Status Data
The fault/status circuitry will add six bits to the serial data stream following the twelve bits of serial A/D converter data. The first four bits is the 4-bit fault code; the fifth bit is reserved for the future and sixth bit is the shunt active status bit. The 4-bit fault code sent back to PMAC2 for each axis could reflect either global faults or axis-specific faults on that axis. It will not reflect an axis-specific fault from another axis.
If there is an axis-specific fault and a global fault, the code of the axis with the fault will show the global fault (due to the rule of the higher fault number being reported).
The fault code is accessed in PMAC2 memory via M-variables. For example, the RAM register location
X:$0710 contains Channel 1 ADC1A input image value. Assign M130->x:$0710,8,4 to access 4-bit values only, to read the fault code for channel #1. The following is an example of a PLC that would continuously scan for a Bus under voltage condition.
Close
Delete Gather
M130->x:$0710,8,4
;
Open plc 1
Clear
If (M105=12)
Send “Bus under voltage fault”
Dis plc 1
Endif
Close
Troubleshooting 29
Quad Amp Hardware Reference Manual
Note:
Jumpers E1A, E1B, E2A, E2B, E3A, E3B, E4A, E4B must be installed on the current sense board so that the 4-bit fault code can be accessed at PMAC2 Gate
Array Registers.
Once such a condition occurs, the PLC notifies the user with an on-screen message and then disables itself. Note that C is a hex fault code for Bus under voltage and its decimal representation is 12.
LED Fault Indicator
The fault information is reported as a 4-bit value (0-15 decimal, 0-F hex). A value of 0 indicates no fault.
A value greater than 0 specifies a fault and the number indicates which fault.
Global faults are numbered in the range 8-F (hex). Axis-specific fault codes are numbered in the range 1-
7 (hex). In the case of multiple faults, the higher-numbered fault condition is reported.
If there is no fault condition, the display will indicate a 0. With a 0 in the display, the left decimal point shall be lit if any of the axes is enabled. The right decimal point shall be lit if the internal shunt is active.
The LED fault indicator will provide a following common fault code for the Quad Amplifier:
0
Everything O.K.
1
General firing module fault
2 Module over temperature
3
Ground fault
4
Over current (surge) fault
5 Motor over temperature
6
TBD
7
TBD
8
Heat-sink over temperature fault
9 High PWM frequency fault
A
DAC (nonPWM) fault
B
Bus over voltage
C
Bus under voltage
D General Power Supply/Soft Start fault
E
TBD
F
TBD
Global Fault Only
In the case of a global fault only, the display will indicate the fault number from 8-F (hex). In the case of multiple global faults, the higher numbered fault will be displayed. The decimal point shall be off
(pending possible future use).
Global and Axis-Specific Faults
In the case of an axis-specific fault and a global fault, the global fault shall be indicated.
Axis-Specific Fault Only
In the case of an axis-specific fault on any axis, the display will indicate the fault number from 1-7. The two decimal points shall be used to indicate which axis has the fault in the following manner:
Axis 1:
Axis 2:
Axis 3:
Axis 4:
Left off
Left off
Left on
Left on
Right off
Right on
Right off
Right on
30 Troubleshooting
Quad Amp Hardware Reference Manual
In the case of multiple axis-specific faults on one axis, the higher-numbered fault shall be indicated.
In the case of axis-specific faults on multiple axes, the axis with the higher-numbered fault shall be displayed along with the decimal point indicting its axis number.
In the case of axis-specific faults of the same number on multiple axes, the fault number shall be displayed and decimal point indication shall specify the higher-numbered axis.
Problem Check
Under voltage indicator comes on when power is applied.
This is a normal condition. When AC power is first applied, the Soft Start has not been initialized and the bus is not charged. This results in a low line fault. The first enable command (usually o0) will initialize the Soft Start. The following CNTL K command will ensure that no motor is enabled. It will also turn the Soft Start IGBT on and allow the bus cap to charge.
Quad Amplifier enables normally but
LED Fault Indicator displays C after a
Check if the bus voltage holds steady after an axis is enabled and/or moved motor is moved.
Motor does not turn. 1. Is the correct main AC power applied to the unit?
Apply correct AC power.
2. Is a motor connected? Connect
3. Is the power enable (E-Stop) switch closed at C1?
Close E-Stop switch. (If E-Stop not used, make sure a plug is installed on connector C1.)
4. Is PMAC2 connected, powered and working?
5. Is the correct axis being commanded?
6. Is there a fault indicated on the
LED Fault Indicator?
Connect, power up or replace PMAC2 if necessary.
Command the correct axis.
Refer to the LED Fault Indicator fault codes and take the corrective action.
Warning:
At this point, it is necessary to remove the Quad Amplifier cover to further troubleshoot the unit. Every precaution should be taken to avoid serious injury from being exposed to high voltages.
7. Is there a bus voltage?
8. Are all logic supply LEDs (D5,
D6, D7) on the logic and current sense boards lit?
9. Is the commanded axis enable
LED (D18-D21 on logic board) lit?
Make sure the AC power is applied and check for
DC bus voltage across 15 k Ohm bleed resistor on the filter capacitor box.
An unlit power supply LED means that a supply is bad or missing. Check AC voltages at J5 of the Quad Amplifier logic board. Check if the cable between the logic board and the current sense board is connected.
Generally, enable LED comes on after #xo0 command. Check if Ix00 is 1.
Troubleshooting 31
Quad Amp Hardware Reference Manual
Motor moves after a command is issued but under voltage fault comes on shortly after.
Also, the Soft Start resistor heats up (and possibly burns).
Under voltage fault stays displayed even after several enable commands.
Verify if the bus voltage sags when the motor is commanded to move.
The Main IGBT probably does not turn on. Check if the wiring between
E1 and G1 (of Main IGBT) and J4-5, -
6 (Soft Start board) is okay. Then verify if G1 with respect to E1 switches from approx. –10 VDC to
+15 VDC after the Main power is turned on. If it does, the Main IGBT is probably open. If it does not, the problem is most likely with the Soft
Start board.
Check if there is bus voltage across
15k Ohm bleed resistor.
Call Delta Tau for an RMA.
If not, examine if the 10-pin flat cable between the Soft Start and the I/O Logic board is connected on both sides and in good shape.
32 Troubleshooting
Quad Amp Hardware Reference Manual
ILLUSTRATED REPAIR PARTS LIST
Purpose
This chapter contains the Repair Parts List (RPL) for the 4-Axis Digital Amplifier (Quad Amplifier ). The
RPL identifies the customer replaceable units (CRUs) of Quad Amplifier with an illustration and a Group
Assembly Parts List (GAPL).
Scope
The GAPL includes figure/index number; part number; description; true manufacturer and true manufacturer part number, if applicable, for each CRU of the Quad Amplifier. Replacement parts may be ordered from Delta Tau Data Systems, Inc. or by contacting the manufacturer or vendor listed.
How to Use the Repair Parts List
To effectively use the RPL, proceed as follows:
1. Find the item on the illustration and ascertain the item’s index number.
2. Locate the index number on the Group Assembly Parts List table to identify the item, part number, and manufacturer.
•
To obtain replacement components, contact Delta Tau or the manufacturer. Manufacturers are listed in this section.
Illustrated Repair Parts List 33
Quad Amp Hardware Reference Manual
34
Figure 12 Delta Tau Data Systems 4 Axis Digital Amplifier
Illustrated Repair Parts List
Quad Amp Hardware Reference Manual
Figure
And
Part Number Description
1 2 3 4 5 6 7
Qty
Per
Manu- facturer
Part Number
Index Assy
Number
7-1 500-602645-103 QUAD Digital Amplifier (Top Assy)
-10 300-602761-103 PCBA, Logic I/O
-20 400-602800-103 Soft Start Assy
-30 300-602677-102 PCBA, Current Sense
-40 200-602617-556 Amplifier Cover
-50 200-602737-551 Plastic Cover (Motor Output)
Delta Tau
1 Delta Tau
1 Delta Tau
1 Delta Tau
1 Delta Tau
1 Delta Tau
-60 200-602816-552 Plastic Cover (AC Input
Voltage)
-70 007-400182-008
-80 021-HPFRR1-
000
Capacitor 1800UF/400V 1 Nichicon LNQ2G182MS
M
HPF-RR
1 Bussman KTK-R-30 -90 021-TK30R0-
214
Fuse, AMP/600V
-100 021-042431-000 Fuse Holder (F202)
Fuse 4A-SB 250V -110 021-000004-
0FS
-120 021-BM6031-
000
Fuse Holder (F202) (Used on 380/460
Quad Amplifier)
1
1
Keystone 4243
Little Fuse 313004
1 Bussman BM6031SQ
-130 021-FN04Q4-
004
Fuse 4A 500V (Used on 380/460
Quad Amplifier)
-140 213-602647-100 Control PWR Trans
-150 005-580N40-
3BR
-160 005-500810-
0ME
Bridge Rect. 40A/800V (for standard power supply)
Bridge Rect. 100A/800V (for upgraded power supply)
1 Bussman FNQ-4
1 3s Indust 6000-63-1
1 Powerex RM20TPM-H
1 Powerex ME500810
-170 005122100-3BR Bridge Rect. 100A/1200V (for high voltage power supply)
-180 004-50D600-
0HS
IGBT Switch 50A/600V (for standard power supply)
-190 004-CM100-
12H
-200 044-75D122-
0HS
IGBT Switch 100A/600V (for upgraded power supply)
IGBT Switch 75A/1200V (for high voltage power supply)
-210 213-602646-100 Int. Shunt Res. 30/900W (for standard and upgraded power supplies)
-220 008-300060-000 Int. Shunt Res. 60/300W (for high voltage power supply)
-230 032-A30108-
010
4.5” Dia. Cooling Fan 600V (for standard power supply)
-240 032-115060-035 3.5” Dia. Cooling Fan 300W (for upgraded and high voltage power supplies)
-250 005-241250-
0CS
-260 014-030M02-
HSM
2 Pos. Plug (P1)
1 Powerex ME501210
1 Powerex CM50DY-12H
1 Powerex CM100DY-12H
1 Powerex CM75DY-24H
2 Vulcan None
2 Vulcan None
1 Nidec A30108-10
2 Nidec 3610PS-12T-
B30-A0
1 Powerex CS241250
1 Amp 1-480698-0
Illustrated Repair Parts List 35
Quad Amp Hardware Reference Manual
Figure
And
Part Number Description
1 2 3 4 5 6 7
Index
Number
-270 014-030M03-
HSM
3 Pos. Plug (P2)
-280 014-00MF04-
0HM
4 Pos. Plug P3)
-290 300-603001-100 Mov Assy 230VAC 600V (for standard power supply)
-300 300-603000-100 Mov Assy 230VAC 600V (for upgraded power supply)
-310 300-603000-100 Mov Assy 480VAC (for high voltage power supply)
-320 016-600V04-
55A
4 Pos Terminal Blk
-330 016-MARA07-
0TB
7 Pos Terminal Blk
-340 016-000012-600 12 Pos Terminal Blk
-350 028-08A180-
NCS
O.V. Temp Switch (Opens at 180 deg f)
-360 301-602815-101 Bus Filter PCBA (Opt1)
(For 300VDC Bus)
-370 301-602815-101 Bus Filter PCBA (OPT2) (For
600VDC Bus)
-380 200-602625-554 Mounting Foot (Right)
-390 200-602626-554 Mounting Foot (Left)
Qty
Per
Assy
Manu- facturer
1 Amp
1 Amp
Part Number
1 Marathon 1112S
1 Elmwood 3450-88-142-
L180
1 Delta Tau
1 Delta Tau
1-480700-0
1-480702-0
1 Marathon 1104S
1 Marathon 985-GP-07
36 Illustrated Repair Parts List
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Key Features
- 4-Axis Digital Amplifier
- Advanced motion control algorithms
- Compact design
- Robust construction
- Suitable for industrial automation systems
- Bus Supply, Control Supply and Shunt Specifications
- Protection: Transient Voltage Filter, Transient Surge Suppressors, Fly-Back Diode, Fuses, Ground Fault (GF)
- Configurable Options
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Frequently Answers and Questions
What are the physical dimensions of the device?
What is the maximum output current of the amplifier?
Does the amplifier support encoder feedback?
What is the operating temperature range of the amplifier?
What type of motors can be connected to the amplifier?
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