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GS60U
Q U I C K
SCR, Adjustable Speed
Drive for DC Brush Motors
AC Line Voltage
115 VAC or 230 VAC 50/60Hz, single phase
Armature Voltage (115 VAC Input)
0 - 90 VDC
Armature Voltage (230 VAC Input)
0 - 180 VDC
Armature Current
10 1A
Form Factor
1.37 at base speed
HP Rating (90 VDC)
1/8 - 1 HP
HP Rating (180 VDC)
1/4 - 2 HP
0.5 - 6 seconds
Accel. Time Range:
0.5 - 6 seconds
Decel. Time Range:
0 to +/- 10 VDC
Analog Input Voltage Range (signal must be isolated; S0 to S2):
Load Regulation
1% base speed
with Armature Feedback:
0.1% base speed
with Tachogenerator Feedback:
GS60U BOTTOM BOARD
SCR504
SCR508
SCR507
SCR506
SCR505
SCR501
SCR502
C510
R 18
SCR503
L2
C507
C506
T502
T505
T504
G U I D E
S P E C I F I C A T I O N S
W I R I N G
* NOTE
ADD FUSE TO L2
WITH 230 VAC
INPUT ONLY
S T A R T
A1
T503
A2
1
C509
TB501
GND
FUSE*
MOV501
C501
EARTH
GROUND
S T A R T I N G
C503
C502
FUSE
115-230
230-115
T1
RB1
RB1
RB2
CW
+15V
-15V
IC504
SW503
INHIBIT
C502
S0
A1
A2
TB501
FEEDBACK
ARM-TACH
TB503
S1
(d) Voltage Follower
ARMATURE
90-180
ENABLE
S2
±10 VDC SIGNAL
SIGNAL COMMON
FWD
ACC
S3
REV
ACC
+15V
S3
C503
IC501
-15V
+15V
INVERT
INHIBIT
-15V
MAX
SPD
S0
S0
IC502
IC503
RB2
JP502
S1
S2
SW504
C501
RB1
RB2
INVERT
ENABLE
RB1
S1
S2
Y501
POWER
T1
(c) Bidirectional Operation
S3
S3
C504
TB502
-15V
IR
COMP
+15V
T1
S0
TB501
RB2
T2
S1
CW
RB1
+15V
T2
S2
FWD
RB2
-15V
IL503
10K OHM
SPEED POT
T1
T501
REV
RUN
T2
LIMIT
FWD REV
TB501
TB501
(a) Unidirectional Operation, (b) Unidirectional Operation,
Forward Direction
Reverse Direction
TB501
RB1
IL501 IL502
S0
REV
TQ
S0
T1
STOP
FWD
TQ
S1
DB
S2
S1
TACH
S3
S2
Recommended Line Fuse Sizes
T2
MIN
SPD
S3
TACHOGENERATOR
(OPTIONAL)
TB501
L2
RB2
L1
REV
10K OHM
SPEED POT
GND
-15V
CW
To stop the drive:
To regeneratively brake the drive, use Inhibit
To decelerate the drive, turn the speed adjust potentiometer fully CCW, decrease the
voltage follower signal to 0 VDC, or close RB1 and RB2.
To coast to a stop, use the Enable.
T2
T1
FWD
S T O P P I N G
To start the drive:
1. Set the speed adjust potentiometer or reference voltage to zero speed.
2. Set the input switches SW501 and SW502 to either 115 or 230 accordingly (bottom board).
Set the output switch SW504 to either 90 or 180 accordingly (top board).
Set the feedback switch SW505 to TACH if using a tachogenerator, otherwise set to ARM (top board).
3. Apply AC line voltage.
3. Slowly turn the speed adjust potentiometer clockwise or counter clockwise to rotate the motor in the forward or reverse direction.
If in voltage follower mode, slowly increase the voltage in either the positive or negative direction to rotate the in the forward or
reverse direction. Continue until the desired speed is reached.
T501
T2
+15V
&
SW502
AC LINE
INPUT
115 or 230 VAC
10K OHM
SPEED POT
Requires heatsink GS223-0159 when above 5 Amps
MOTOR
90 VDC Motor
Horsepower
180 VDC Motor
Horsepower
Max. DC Armature
Current (amps)
AC Line Fuse
Size (amps)
1/20
1/10
0.5
3
1/15
1/8
0.8
3
1/8
1/4
1.5
5
1/6
1/3
1.75
5
1/4
1/2
2.5
8
1/3
3/4
3.5
8
1/2
1
5.0
10
3/4
1 1/2
7.5
15
1
2
10
20
GS6OU TO P BOARD
© 2009 Applied Industrial Technologies, Inc. All Rights Reserved. C-0209-11-5140
For a complete user manual visit www.Applied.com/gsmum
IR COMPENSATION (IR COMP)
The IR COMP trimpot setting determines the degree to which
motor speed is held constant as the motor load changes. It is
factory set for optimum motor regulation.
To calibrate FWD TQ:
1. With the power disconnected from the drive, connect a DC
ammeter in series with the armature.
2. Set the FWD TQ trimpot to minimum (full CCW).
3. Set the speed adjust potentiometer to maximum (full CW).
4. Carefully lock the motor armature. Be sure that the motor is
firmly mounted.
5. Apply line power. The motor should be stopped.
6. Slowly adjust the FWD TQ trimpot CW until the armature
current is 120% of motor rated armature current.
7. Set the speed adjust potentiometer to minimum.
8. Remove the power from the drive.
9. Unlock the motor shaft.
10. Remove the ammeter in series with the motor armature if it is
no longer needed and re-apply power to the drive.
REVERSE TORQUE (REV TQ)
The REV TQ setting determines the maximum current limit for
accelerating and driving the motor in the reverse direction. It is
factory set at 120% of maximum rated drive curent.
To calibrate REV TQ:
1. With the power disconnected from the drive, connect a DC
ammeter in series with the armature.
2. Set the REV TQ trimpot to minimum (full CCW).
3. Set the speed adjust potentiometer to maximum (full CW).
4. Carefully lock the motor armature. Be sure that the motor is
firmly mounted.
5. Apply line power. The motor should be stopped.
6. Slowly adjust the REV TQ trimpot CW until the armature
current is 120% of motor rated armature current.
7. Set the speed adjust potentiometer to minimum.
8. Remove the power from the drive.
9. Unlock the motor shaft.
10. Remove the ammeter in series with the motor armature if it is
no longer needed and re-apply power to the drive.
SW503
SW504
INVERT
INHIBIT
IR
COMP
LIMIT
FWD REV
IC502
IC503
IL501 IL502
A2
INHIBIT
FWD
TQ
GND
A1
C501
TB503
REV
TQ
C503
IC501
INVERT
ENABLE
ENABLE
L1
IC504
MAX
SPD
L2
FEEDBACK
ARM-TACH
C502
JP502
REV
ACC
DB
FORWARD ACCELERATION (FWD ACC)
The FWD ACC setting determines the time the motor takes to ramp
to either a higher speed in the forward direction or a lower speed in
the reverse direction, within the limits of available torque. The
FWD ACC setting is factory set for its fastest forward acceleration time.
Turn the FWD ACC trimpot CW to increase the forward acceleration
time, and CCW to decrease the forward acceleration time.
MIN
SPD
The deadband trimmer potentiometer afects the resistance that a motor has
to changes in shaft position at zero speed. It does this by applying AC voltage
to the motor armature.
Deadband is factory calibrated with the notch at approximately the 3 o’clock
position for 60 Hz AC line operation. Recalibrate the deadband with the notch
at the 9 o’clock position for 50 Hz AC line operation. If you hear motor noise
(humming), the deadband might be set too high. Turn the deadband trimpot
CCW until the motor noise ceases.
Check the the tachogenerator is properly calibrated. The motor should run at
the same speed when SW503 is set to either armature or tachogenerator feedback.
© 2009 Applied Industrial Technologies, Inc. All Rights Reserved. C-0209-11-5140
S0
S1
S2
S3
+15V
-15V
RB2
T1
T2
TB501
T501
INHIBIT TERMINALS
ENABLE TERMINALS
INHIBIT
CONFIGURATION
JP502
INVERT
INHIBIT
TB503
INHIBIT MODE
CLOSED
JP502
INVERT
INHIBIT
SETTINGS
DRIVE RESPONSE
OPEN
MOTOR REGENERATIVELY BRAKES
WHEN INHIBIT
TERMINALS ARE CLOSED
TB503
INVERT INHIBIT MODE
CLOSED
MOTOR REGENERATIVELY BRAKES
WHEN INHIBIT TERMINALS
ARE OPENED
OPEN
TACH GENERATOR (TACH)
Calibrate the TACH setting only when a tachogenerator is used. The TACH
setting, like the IR COMP setting, determines the degree to which motor speed
is held constant as the motor load changes.
To calibrate TACH trimpot:
1. Connect the tachogenerator to T1 and T2. The polarity is positive (+) for T1
and negative (-) for T2 with the motor running in the forward direction.
2. Set SW503 to ARM for armature feedback.
3. Set the speed adjust potentiometer full CW. Measure the armature voltage
across A1 and A2 using a voltmeter.
4. Set the speed adjust potentiometer to 0 (zero speed).
5. Set SW503 to TACH for tachogenerator feedback.
6. Set the IR cOMP trimpot to full CCW.
7. Set the TACH trimpot to full CW.
8. Apply line power.
9. Set the speed adjust potentiometer to full CW.
10. Adjust the TACH trimpot until the armature voltage is the same value as the
voltage measured in step 3.
RB1
POWER
REVERSE ACCELERATION (REV ACC)
The REV ACC setting determines the time the motor takes to ramp
to either a higher speed in the reverse direction or a lower speed in
the forward direction, within the limits of available torque. The
REV ACC setting is factory set for its fastest reverse acceleration time.
Turn the REV ACC trimpot CW to increase the reverse acceleration
time, and CCW to decrease the reverse acceleration time
DEADBAND (DB)
The deadband trimmer potentiometer determins the time that will elapse
between the application of current in one direction before current is applied
in the opposite direction.
IL503
TACH
INHIBIT
FORWARD TORQUE (FWD TQ)
The FWD TQ setting determines the maximum current limit for
accelerating and driving the motor in the forward direction. It is
factory set at 120% of maximum rated drive curent.
ARMATURE
90-180
FWD
ACC
INHIBIT
NOTE: Check the MIN SPD and MAX SPD adjustments after
recalibrating to verify that the motor runs at the desired minimum
and maximum speed.
E N A B L E
INVERT INHIBIT & INVERT ENABLE
Jumper Settings (JP502)
ENABLE
CONFIGURATION
JP502
INVERT
ENABLE
TB503
OPEN
CLOSED
JP502
INVERT
ENABLE
TB503
CLOSED
SETTINGS
DRIVE RESPONSE
ENABLE MODE
MAINTAINED CLOSED
ENABLE
To calibrate MAX SPD:
1. Set the MAX SPD trimpot to full CCW
2. Turn the speed adjust potentiometer CW so that the motor is
running at full speed.
3. Adjust the MAX SPD trimpot until the desired maximum motor
speed is reached.
&
Y501
MAXIMUM SPEED (MAX SPD)
The MAX SPD trimpot setting determines the maximum
forward and reverse speed. It is factory set for maximum rated
motor speed.
I N H I B I T
C504
To calibrate IR COMP:
1. Set the IR COMP trimpot to minimum (full CCW).
2. Rotate the speed adjust potentiometer until the motor runs at
mid-speed without load (for example, 900 RPM for an 1800
RPM motor). A hand held tachometer may be used to measure
motor speed.
3. Load the motor armature to its full load armature current rating.
The motor should slow down.
4. While keeping the load on the motor, rotate the IR COMP
trimpot until the motor runs at the speed measured in step 2. If
the motor oscillates (overcompensation), the IR COMP trimpot
may be set too high (CW). Turn the IR COMP trimpot CCW to
stabilize the motor.
5. Unload the motor.
To calibrate MIN SPD:
1. Set the speed adjust potentiometer to full CCW
2. Adjust the MIN SPD trimpot until the desired minimum motor
speed is reached.
Do not make any connections, rewire,
install, or disconnect this drive while
power is applied.
MOTOR COASTS
TO STOP WHEN
ENABLE TERMINALS
ARE MAINTAINED
CLOSED
INVERT ENABLE MODE
MAINTAINED OPEN
ENABLE
MINIMUM SPEED (MIN SPD)
The MIN SPD trimpot setting determines the minimum speed when
the speed adjust potentiometer is turned full CCW. It is factory set
to zero speed. The minimum speed feature applies only when the
drive is operating in unidirectional mode.
W A R N I N G
S E T T I N G S
TB502
C A L I B R A T I O N
OPEN
MOTOR COASTS
TO STOP WHEN
ENABLE TERMINALS
ARE MAINTAINED
OPEN
For a complete user manual visit www.Applied.com/gsmum