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DURApulse GS20 AC Drive Quick-Start Guide
GS20 AC Drives Installation Instructions
Sensorless Vector Control Variable Frequency Micro-drive
• Please read this instruction sheet thoroughly before installation and retain for later
reference.
• To ensure the safety of operators and equipment, only qualified personnel familiar
with AC drives should install, wire, program, and operate the GS20 drive. Always read this instruction sheet
thoroughly before using the GS20 drive, especially the WARNING, DANGER and CAUTION notes. If you have any
questions, please contact AutomationDirect.
PLEASE READ PRIOR TO INSTALLATION FOR SAFETY
• The ground terminal of the GS20 drive must be grounded correctly. The grounding method
must comply with the laws of the country where the GS20 drive is to be installed.
• After power has been turned off, the capacitors in the GS20 drive may retain a charge for
several minutes. To prevent personal injury, visually verify that the "CHARGE" LED has
turned off. Then measure to confirm that the DC bus voltage level between terminals (+1)
and (-) is less than 25VDC before touching any terminals. (Capacitor discharge will take at
least 5 minutes for most GS20 models)
• The CMOS ICs on the internal circuit boards of the GS20 drive are sensitive to static
electricity. Please DO NOT touch the circuit boards with your bare hands before taking
anti-static measures. Never disassemble the internal components or circuits.
DANGER
• If wiring changes must be made, turn off power to the GS20 drive before making those
changes. Allow the internal DC bus capacitors in the GS20 drive sufficient time to discharge
prior to making changes in power or control wiring. Failure to do so may result in short
circuit and fire. To ensure personal safety, allow DC bus voltage to discharge to a safe level
before making wiring changes to the GS20 drive.
• DO NOT install the GS20 drive in locations subject to high temperature, direct sunlight, or
flammable materials.
• Never apply power to the output terminals U/T1, V/T2, W/T3 of the GS20 drive. If a fault
occurs during operation of the GS20 drive, refer to the fault code descriptions and corrective
actions to reset the fault before attempting to operate the GS20 drive.
• DO NOT use Hi-pot test for internal components. The semi-conductors in the GS20 drive are
WARNING
easily damaged by high voltage.
• Long motor lead lengths may result in reflective wave due to impedance mismatch between
the motor cable and the motor. Reflective wave may damage the insulation of the motor.
To avoid the possibility of reflective wave damage, use an inverter-rated motor with an
insulation rating of 1600 volts. A load reactor installed between the GS20 drive and motor
will help to mitigate reflective wave.
• Nominal supply voltage to the GS20 drive should be less than or equal to 120/240/480 volts
AC depending on GS20 model.
• Nominal supply current capacity should be less than or equal to 100kA for all GS20 models.
• The GS20 drive must be installed in a clean, well-ventilated and dry location, free from
corrosive gases or liquids.
CAUTION
• The GS20 drive must be stored within an ambient temperature range from –40°C to +85°C,
and relative humidity range of 0% to 90% without condensation.
• Do not apply AC power to the GS20 drive with the front cover removed. Following a fault of
the GS20 drive, wait 5 seconds before pressing the RESET key.
• To improve power factor, install a line reactor ahead of the GS20 drive. Do not install power
correction capacitors in the main AC supply circuit to the GS20 drive to prevent drive faults
due to over-current.
Minimum Wiring
• AC input power to R/L1, S/L2, T/L3 (for single-phase input, use two of the terminals) (For applicability of 1-phase
input power, please refer to Chapter 1 of the DURApulse GS20 AC Drives User Manual at AutomationDirect.com.)
• Ground from the power supply
• Drive power to the motor (U, V, W on T1, T2, T3) (For use with 3-phase motors only!)
• Ground to the motor
• STO1 and STO2 (both must be wired through appropriate N.C. safety-rated contacts to DCM or the
factory-installed jumpers must be left in place)
With this minimal wiring, the drive can be operated via the keypad to test the motor and drive installation.
See the "Parameter Set Up"
(page
3) section to configure the drive for keypad operation.
Recommended Safety Wiring
We strongly recommend that customers use the STO safety feature.
The Safe Torque Off (STO) function turns off the power supplied to the motor through the hardware, so
that the motor cannot produce torque. This method of removing power from the motor is considered an
emergency stop, also known as "coast to stop."
To use this feature, disconnect the appropriate factory-installed jumpers and wire a safety relay, safety PLC, or
E-Stop pushbutton as shown. See Main Wiring (Power Circuit)
(page
GS20_QSP_1ed 06/29/2020
Wiring Diagrams
RFI Jumper Removal
If the power distribution system supplying the GS20 AC drive is a floating (IT) or an
asymmetric ground system (including most 120V inputs), the RFI jumper must be
removed.
Removing the RFI jumper uncouples the internal RFI capacitor (filter capacitor)
between the GS20 drive frame and circuitry to avoid damaging those circuits and
(according to IEC 61800-3) to reduce ground leakage current.
GS20 Frame A through F
Main Wiring (Power Circuit)
For main (power) wiring terminal specifications, Please refer to "Specifications for Wiring Terminals –
Main-Circuit Terminals"
GS20 all Frames
*(Note that 1-phase drives do not have a T/L3 terminal)
Input: one-phase / three-phase* power
Circuit Breaker or Fuse
R/L1
S/L2
T/L3*
It is recommended that
you install a protective
circuit at R1C – R1 to
protect the system from
damage.
When a fault occurs, the MC contact switches
to ON to shut off the power and protect the
power system.
R1C and R1 are the relay output terminals.
1) for wiring the GS20.
Note: Remove Clip
(page
2).
DC reactor (optional)
Brake resistor (optional)
Jumper
MC
R/L1
U/T1
S/L2
V/T2
T/L3*
W/T3
R1C
MC
R1
ON
OFF
MC
GS20 Control Terminal Wiring
+24 V
+24 V
FWD/STOP
DI1/FWD
REV/STOP
DI2/REV
Multi-step speed 1
DI3
Multi-step speed 2
DI4
Default
Multi-step speed 3
DI5
Multi-step speed 4
DI6
N/A
DI7
Digital Signal Common
DCM
NOT E
*DI7 can input 33 kHz pulses.
*Do NOT apply the mains voltage directly to
external terminals.
Default:
NPN (SINK) Mode
Please refer to the wiring of NPN mode and PNP mode.
N OT E
*
1:
It is a short circuiting jumper installed between
+24 V, S1 and S2 short when GS20 leaves the factory.
Remove this short circuiting jumper before using the
safety function while wiring.
*
2: The +24 V is for STO only, and cannot be used for any
other purpose.
E STOP
+24 VDC
SCM
Safety PLC
* 1
+24 V
STO1
STO2
+10 VDC / 20 mA
+ 10 V
0 – 10 VDC
3
AI1
5KΩ
2
-10 VDC – 10 VDC
1
+
0 – 20 mA / 4 – 20 mA
AI2
0 – 10 VDC
Analog Signal common
ACM
Main circuit terminals
Control terminals
Shielded leads & Cable
Specifications for Wiring Terminals – Control Circuit
GS20-xxxx All Models; All Frame Sizes
Terminal
Wire Gauge
24–18 AWG
Control
[0.21–0.82 mm
24–16 AWG
Relay
[0.21–1.31 mm
Motor
3~
DURApulse GS20 AC Drive Quick-Start Guide – 1st Ed 06/29/2020
R1O
Multi-function relay output terminals
250 VAC / 3 A (N.O.)
R1C
250 VAC / 3 A (N.C.)
250 VAC / 1.2 A (N.O)
R1
Estimate at COS (0.4)
DO
Multi-function output
frequency terminals
30 VDC / 30 mA 33 kHz
DCM
N
P
P
P
N
N
NPN
N
P
P
Multi-function output
DO1
terminal 48 VDC / 50 mA
Multi-function output
DO2
terminal 48 VDC / 50 mA
Multi-function output
DOC
common terminal (photocoupler)
Analog Multi-function output
AO1
terminal 0 – 10 VDC /
0 – 20 mA / 4 – 20 mA
Analog Signal common
V
V
0
0
- 1
- 1
*
2
0
0
AFM
AO1
1
SGND
8
SG+
Modbus RS-485
A
A
A
A
m
m
m
m
0
0
0
0
- 2
- 2
- 2
- 2
0
0
4
4
0 – 20 mA
4 – 20 mA
Communication card/
Option Slot
AI2
ACI
DC 24V external power supply card
USB Port
Torque
n/a (spring terminals)
2
]
5kg·cm
2
]
[4.3 lb·in]
USB
AI2
AO1
DATAMATRIX
Safety function
32637012
RELAY
RS485
Port
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