It is recommended that you install a protective circuit at R1C – R1 to protect the drive from damage.
When a fault occurs, the MC contactor switches to OFF to shut off the drive inputpower and protect the power system.
MC
DO
DCM
Multi-function outputfrequency terminals30 VDC / 30 mA 33 kHz
DO2
DOC
DO1
Multi-function outputterminal 48 VDC / 50 mA
Multi-function outputterminal 48 VDC / 50 mA
Multi-function output common terminal (photocoupler)
USB Port
Communication card/DC 24V external power supply card
Option Slot
250 VAC / 3 A (N.O.)
250 VAC / 3 A (N.C.)
R1O
R1C
R1
250 VAC / 1.2 A (N.O)
Multi-function relay output terminals
Estimate at COS (0.4)
Modbus RS-485
8
1
S
G
+
S
G
N
D
Control terminals
Shielded leads & Cable
Main circuit terminals
NOT
E
DI1/FWD
DI2/REV
DI3
DI4
DI5
DI6
DI7
DCM
+
24V
+
24V
Default
FWD/STOP
REV/STOP
Multi-step speed 1
Multi-step speed 2
Multi-step speed 3
Multi-step speed 4
N/A
Digital Signal Common
*DI7 can input 33 kHz pulses.*Do NOT apply the mains voltage directly toexternal terminals.
Default: NPN (SINK) Mode (internal power)Please refer to the wiring of NPN mode and PNP mode.
STO1
+24 V
STO2
ESTOP
+24 VDC
Safety PLC
NOT
E
SCM
*
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.
*
1:
*
2:
The +24 V is for STO only, and cannot be used for anyother purpose.
2
*
AI1
ACM
+
10V
3
2
1
0–10 VDC
AI2
0–10 VDC
+
10 VDC / 20 mA
-10 VDC–10 VDC
0–20 mA / 4
–
20 mA
Analog Signal common
Analog Multi-function outputterminal 0 – 10 VDC / 0 – 20 mA / 4 – 20 mA
Analog Signal common
+
5KΩ
P
N
P
NPN
P
N
P
NPN
0
-
1
0
V
AFM
–
0
-
1
0
V
AO1
0
–
20 mA
0
–
10 V
0
-
2
0
m
A
4
-
2
0
m
A
ACI
0–20 mA
4–20 mA
0
-
2
0
m
A
4
-
2
0
m
A
AI2
0
–
20 mA
4
–
20 mA
0
–
AO1
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
DANGER
WARNING
CAUTION
anti-static measures. Never disassemble the internal components or circuits.
• 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
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.
• 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.
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
Note: Remove Clip
Main Wiring (Power Circuit)
For main (power) wiring terminal specifications, Please refer to “Specifications for Wiring Terminals –
Main-Circuit Terminals” (page 2).
GS20 all Frames
*(Note that 1-phase drives do not have a T/L3 terminal)
GS20 Control Terminal Wiring
FWD (DI1)
REV (DI2)
DI7
FWD (DI1)
REV (DI2)
DI7
DCM
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 4) 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 1) for wiring the GS20.
GS20_QSP 1st Edition, Rev B 01/29/2021
DCM
FWD (DI1)
REV (DI2)
DI7
DCM
FWD (DI1)
REV (DI2)
DI7
DCM
DURApulse GS20 AC Drive Quick-Start Guide – 1st Ed, Rev B 01/29/2021
Page 1
DURApulse GS20 AC Drive Quick-Start Guide
P02.00External Terminal Control Circuits
Setting value: 1
Two-wire operation control
FWD / STOP
REV / STOP
Setting value: 2
Two-wire operation control
RUN / STOP
FWD / REV
FWD/DI1
REV/DI2
DCM
FWD/DI1
REV/DI2
DCM
FWD/DI1
Setting value: 3
Three-wire operation control
DI3
REV/DI2
DCM
Specifications for Wiring Terminals – Control Circuit
GS20-xxxx All Models; All Frame Sizes
TerminalWire GaugeTorque
Control
Relay
24–18 AWG
[0.21–0.82 mm2]
24–16 AWG
[0.21–1.31 mm2]
GS20(X)
GS20(X)
GS20(X)
n/a (spring terminals)
5kg·cm
[4.3 lb·in]
Recommended models or dimensions for ferrule terminals
Specifications for Wiring Terminals – Main-Circuit Terminals
Notes:
• If you install at Ta 45°C above environment, please use copper wire with a 600V voltage rating and
temperature resistance of 90°C or higher.
• For UL compliant installation, you must:
1) Use 75°C temperature resistant copper wire or better. Do not reduce wire gauge when using higher
temperature wire.
2) Use the specific ring lug part listed in the table below.
3) Use crimp tool KST2000D-1322 or IZUMI 5N18 for 22–8 AWG wire, or
IZUMI 9H-60 for 6–4 AWG wire.
Specifications for Wiring Terminals – Main-Circuit Terminals (continued)
Drive Models
GS21-11P0
GS21-22P0
GS21-23P0
GS23-23P0
GS23-25P0
Frame C
GS23-43P0
GS23-45P0
GS23-53P0
GS23-55P0
GS23-27P5
GS23-47P5
GS23-4010
Frame D
GS23-57P5
GS23-5010
Max Wire
Gauge
8AWG
[8.4 mm2]
8AWG
[8.4 mm2]
Min Wire
Gauge
10AWG
[5.3 mm2]
8AWG
[8.4 mm2]
12AWG
[3,3 mm2]
10AWG
[5.3 mm2]
14AWG
[2.1 mm2]
12AWG
[3,3 mm2]
8AWG
[8.4 mm2]
10AWG
[5.3 mm2]
Ring
Lug P/N
RNBS
5-4
RNBS
8-4
RNBS
5-4
RNBS
2-4
RNBS
5-4
RNBS 8-4
RNBS 5-4
Screw
M4
M4
Torque
(±10%)
20 kg-cm
[17,4 lb-in.]
[1.96 N·m]
20 kg-cm
[17,4 lb-in.]
[1.96 N·m]
Ring Lug Dimensions (mm)
DimensionValueMin/Max
A17.8Max
B5.0Max
C6.1Min
D7.2Max
d24.3Min
E13.0Min
F5.5Min
W8.0Max
t1.2Max
DimensionValueMin/Max
A17.8Max
B5.0Max
C6.1Min
D7.2Max
d24.3Min
E13.0Min
F5.5Min
W8.0Max
t1.2Max
PNP
AI2
DI6
4-20mA
0-20mA
SG+
AO1
DI7
SG-
NPN
SGND
DO1
+24V
DO2
+24V
DOC
USB
DATAMATRIX
24P
32637012
SLOT 1
RELAY
R1
R1C
R1O
RS485
Port
DO
DCM
DCM
4-20mA
0-20mA
AI2
+24V
Safety function
+10V
REV
FWD
0-10V
STO1
DI3
STO2
ACM
DI4
0-10V
AO1
SCM
AI1
DI5
Wiring Precautions
1) The factory default condition is +24 V/ S1/ S2 shorted by jumper, as shown in the block 1 of the figure above.
Refer to the wiring chapter of the User Manual for more details.
2) The +24 V power supply for safety function is only for STO use and cannot be used for other purposes.
3) The RELAY terminal uses the PCB terminal block:
• Tighten the wiring with a 3.5 mm width and 0.6 mm thickness slotted screwdriver.
• The ideal length of stripped wire at the connection side is 6–7 mm.
• When wiring bare wires, make sure they are perfectly arranged to go through the wiring holes.
4) The control circuit terminal uses a spring clamp terminal block:
• Tighten the wiring with a 2.5 mm width and 0.4 mm thickness slotted screwdriver.
• The ideal length of stripped wire at the connection side is 9 mm.
Drive Models
GS21-10P2
GS21-20P2
GS23-20P2
GS23-20P5
GS21-10P5
GS21-20P5
Frame A
GS23-40P5
GS23-21P0
GS23-41P0
GS23-51P0
GS23-22P0
GS23-42P0
Frame B
GS23-52P0
GS21-21P0
Max Wire
Gauge
14AWG
[2.1 mm2]
12AWG
[3,3 mm2]
Min Wire
Gauge
16AWG
[1.3 mm2]
18AWG
[0.82 mm2]
14AWG
[2.1 mm2]
18AWG
[0.82 mm2]
16AWG
[1.3 mm2]
18AWG
[0.82 mm2]
14AWG
[2.1 mm2]
Ring
Lug P/N
RNBS
2-3.7
RNBS
1-3.7
RNBS
2-3.7
RNBS
1-3.7
RNBS
2-3.7
RNBS
1-3.7
RNBS
2-4
Screw
M3.5
M4
Torque
(±10%)
9 kg-cm
[7,8 lb-in.]
[0.88 N·m]
15 kg-cm
[13,0 lb-in.]
[1.47 N·m]
Ring Lug Dimensions (mm)
DimensionValueMin/Max
A9.8Max
B3.2Max
C4.8Min
D4.1Max
d23.7Min
E13.0Min
F4.2Min
W6.6Max
t0.8Max
DimensionValueMin/Max
A12.1Max
B3.6Max
C6.1Min
D5.6Max
d24.3Min
E13.0Min
F4.5Min
W7.2Max
t1Max
GS23-2010
GS23-2015*
Frame E
GS23-4015
6AWG
[13.3 mm2]
4AWG
[21.2 mm2]
6AWG
[13.3 mm2]
6AWG
[13.3 mm2]
4AWG
[21.2 mm2]
8AWG
[8.4 mm2]
RNBS
14-5
RNBS
22-5
RNBS 8-5
M5
25 kg-cm
[21,7 lb-in.]
[2.45 N·m]
GS23-4020
GS23-2020
GS23-4025
Frame F
2AWG
[33.6 mm2]
GS23-4030
* The GS23-2015 drive must be wired with a ring terminal of the specified dimensions.
2AWG
[33.6 mm2]
6AWG
[13.3 mm2]
4AWG
[21.2 mm2]
RNBS
38-6
RNBS
14-6
RNBS
22-6
M6
40 kg-cm
[34,7 lb-in.]
[3.92 N·m]
DimensionValueMin/Max
A27.1Max
B6.1Max
C10.5Min
D11.5Max
d25.3Min
E13.0Min
F6.5Min
W12.2Max
t1.7Max
DimensionValueMin/Max
A35.0Max
B9.0Max
C13.3Min
D14.0Max
d26.2Min
E13.0Min
F19.5Min
W18.0Max
t1.8Max
GS20_QSP 1st Edition, Rev B 01/29/2021
DURApulse GS20 AC Drive Quick-Start Guide – 1st Ed, Rev B 01/29/2021
Page 2
DURApulse GS20 AC Drive Quick-Start Guide
R
F
P
P
P
Digital Keypad Functions and
Indications
Description of the functions of the keys and
indicators of the GS20 AC Drive Keypad.
NOTE: Drive default is AUTO mode. There is
no indication from the keypad of the mode.
Local mode can be set with I/O configuration
or GS4-KPD only.
Descriptions of Keypad Functions (continued)
Descriptions of Keypad Functions
RUN Key
• Valid only when the source of operation command is from the keypad.
• RUN can be pressed even when drive is in process of stopping.
• When in “LOCAL” mode, RUN is valid only when the source of operation command is from
the keypad (drive default is Auto mode, Local mode can be set with I/O or GS4-KPD only).
STOP/RESET Key
This key has the highest processing priority in any situation.
• When the drive receives a STOP command, whether or not the drive is in operation or stop
status, the drive will execute a "STOP" command.
• The RESET key can be used to reset the drive after a fault occurs. For those faults that can't
be reset by the RESET key, see the fault records after pressing MENU key for details.
N OTE: The ability to STOP the drive from the keypad is effective ONLY if the drive is configured
to RUN and/or STOP from the keypad. Keypad STOP can be disabled by parameter 00.32,
Digital Keypad STOP Function.
ENTER Key
Press ENTER to go to the next menu level or accept parameter entry. If it is the last level, then
press ENTER to execute the command.
MENU Key
Press MENU to return to the Main Menu or cycle through the available menu options.
Direction: Up
Press to make the value set on the current menu/parameter higher.
Direction: Left/Down
• Press to make the value set on the current menu/parameter lower.
• In the menu/text selection mode, the arrows are used for item selection. Long press the
MENU key to use the left direction function.
Frequency Setting Dial (Potentiometer)
The dial can be set as the main frequency input. Set Parameter 00-20 or 00-30 to equal
‘7-Digital Keypad Dial’.
Continued on next page.
Descriptions of LED Functions (continued)
Descriptions of LED Functions
Steady ON: Drive is running.
RUN
Blinking: Drive is stopping or in base block.
Steady OFF: Drive is not running.
Keypad Navigation Example
InstructionPress KeyDisplay Will Show
First menu to display after power up.n/a
Press MENU once from startup.MENU
Press MENU twice from startup.MENU
Press MENU three times from startup.MENU
Press MENU four times from startup.
Displays Frd if the drive is currently
configured for Forward operation. Press
the UP or DOWN key to change to Reverse.
Press ENTER to confirm the change.
Press MENU five times from startup.
Displays the current PLC setting. Press the
UP or DOWN arrow keys to change the
PLC setting, then press ENTER to confirm.
Enable the counter by setting parameter
00.04 to 1. See the user manual for full
instructions on using the counter.
After selecting the desired menu option,
press ENTER to bring up the parameter
number (Format XX.YY). Use the UP
and DOWN arrow keys to change the
parameter number as needed, then press
ENTER to adjust the parameter value.
From the parameter number screen, press
ENTER to bring up the current value of
the selected parameter. Use the UP and
DOWN arrows to adjust the value. Press
ENTER again to confirm the choice.
Once a desired parameter value has been
set using the UP and DOWN arrow keys,
press ENTER to save the choice and display
End message.
Displays when an external fault is detected.n/a
Displays when data is not accepted or the
value exceeded
Scroll sequentially through the rest of the parameters in the “Basic Configuration” Quick-Start group, and set those
parameters as needed for your application.
After changing all of the applicable parameters, press “MENU” key to return to the Menu screen, and then press
“ESC” key to return to the home screen.
DOWN
DOWN
ENTER,
DOWN,
ENTER,
DOWN
Displays the
present frequency
setting of the drive
Displays the actual
output frequency
of the drive
Displays user
defined output
Displays output
current
Displays the
Forward command
if configured for
MENU,
Forward operation.
UP/
Displays the
ENTER
Reverse command
if configured for
Reverse operation.
MENU,
Displays the
UP/
current PLC
setting.
ENTER
Displays the
MENU
counter value
UP/
Displays the
parameter number
ENTER
Displays the value
UP/
of the selected
parameter
End message.
Displays when data
ENTER
has been accepted
and stored
External fault
message
n/aError message.
UN
WD
R EV
R UN
FWD
R EV
R UN
FWD
R EV
GS20 Fault Codes
STO
PL C
STO
PL C
STO
PL C
0: No Error
1: Overcurrent during Accel (ocA)
2: Overcurrent during Decel (ocd)
3: Overcurrent during constant speed (ocn)
4: Ground Fault (GFF)
6: Overcurrent during Stop (ocS)
7: Overvoltage during Accel (ovA)
8: Overvoltage during Decel (ovd)
9: Overvoltage during constant speed (ovn)
10: Overvoltage during Stop (ovS)
11: Low voltage during Accel (LvA)
12: Low voltage during Decel (Lvd)
13: Low voltage during constant speed (Lvn)
14: Low voltage during Stop (LvS)
15: Input phase loss (OrP)
16: IGBT Overheat 1 (oH1)
18: Thermister 1 open (tH1o)
21: Drive over-load (oL)
22: Electronics thermal relay protection 1 (EoL1)
23: Electronics thermal relay protection 2 (EoL2)
24: Motor Overheat-PTC (oH3)
26: Over Torque 1 (ot1)
27: Over Torque 2 (ot2)
28: Under current (uc)
31: Memory read-out error (cF2)
33: U phase current sensor detection error (cd1)
34: V phase current sensor detection error (cd2)
35: W phase current sensor detection error (cd3)
36: Clamp current detection error (Hd0)
37: Over-current detection error (Hd1)
40: Auto tuning error (AuE)
41: PID Feedback loss (AFE)
42: PG feedback error (PGF1)
43: PG feedback loss (PGF2)
44: PRG feedback stall (PGF3)
45: PG slip error (PGF4)
48: Analog current input loss (ACE)
49: External Fault input (EF)
50: Emergency Stop (EF1)
51: External Base Block (bb)
52: Password Error (Pcod)
Fault Codes
54: Communication Error (CE1)
55: Communication Error (CE2)
56: Communication Error (CE3)
57: Communication Error (CE4)
58: PC Communication Time Out (CE10)
61: Y-Delta connection Error (ydc)
62: Decel Energy Backup Error (dEb)
63: Slip Error (oSL)
72: Channel 1 (S1~DCM) safety loop error (STL1)
76: Safety Torque Off (STO)
77: Channel 2 (S2~DCM) safety loop error (STL2)
78: Internal loop error (STL3)
79: U Phase over current before run (Aoc)
80: V Phase over current before run (boc)
81: W Phase over current before run (coc)
82: U Phase output phase loss (oPL1)
83: V Phase output phase loss (oPL2)
84: W Phase output phase loss (oPL3)
87: Drive over load in low frequency (oL3)
89: Initial rotor position detection error (roPd)
121: Internal communication error (CP20)
123: Internal communication error (CP22)
124: Internal communication error (CP30)
126: Internal communication error (CP32)
127: Software version error (CP33)
128: Over-torque 3 (ot3)
129: Over-torque 4 (ot4)
134: Electronics thermal relay 3 protection (EoL3)
135: Electronics thermal relay 4 protection (EoL4)
140: GFF detected when power on (Hd6)
141: GFF occurs before run (b4GFF)
142: Auto tuning error 1 (DC test stage) (AUE1)
143: Auto tuning error 2 (High frequency test stage)
(AUE2)
144: Auto tuning error 3 (Rotary test stage) (AUE3)
Steady ON: Drive is operating in Forward mode.
FWD
REV
STOP
PLC
GS20_QSP 1st Edition, Rev B 01/29/2021
Blinking: Drive is changing direction.
Steady OFF: Drive is operating in Reverse mode.
Steady ON: Drive is operating in Reverse mode.
Blinking: Drive is changing direction.
Steady OFF: Drive is operating in Forward mode.
Steady ON: Drive is stopped or in the process of stopping.
Blinking: Drive is in standby (run but does not output).
Steady OFF: Drive is not currently executing an operational (STOP) command.
N OTE: The ability to STOP the drive from the keypad is effective ONLY if the drive is configured to
RUN and/or STOP from the keypad. Keypad STOP can be disabled by parameter 00.32, Digital
Keypad STOP Function.
Steady ON: PLC STOP (PLC 2) initiated.
Blinking: PLC Run (PLC1) inititated.
Steady OFF: No PLC functions implemented (PLC 0).
Continued on next page.
DURApulse GS20 AC Drive Quick-Start Guide – 1st Ed, Rev B 01/29/2021
Page 3
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