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4 Quadrant SCR GEN-PACK H-W DC Drive Instructions
INTRODUCTION
The GEN-PACK H-W™ is a half wave regenerative SCR drive for intermittent operation of permanent magnet motors in a
single or bi-directional mode. It provides forward and reverse torque in both directions, maintains constant speed with
overhauling loads and provides rapid deceleration, reversing, and controlled regenerative braking.
Feedback is jumper selectable from either armature voltage or from a DC tachometer generator with fast response in both
feedback modes.
Specifications:
Speed Range: 50:1
Overload Capacity: 150% for 60 seconds
Maximum Speed Adjustment: 50-110%
Model
12M6-42000
12M6-42001
GENERAL
These instructions provide basic information for installation and adjustment. Please contact Gemini Corp. if further information
is necessary. It is possible to damage the drive through misuse or misapplication. Please read this material thoroughly before
proceeding with installation.
Unpack the equipment noting any shortages or damaged equipment. Immediately notify the carrier of any damage. Store in
clean, dry location if the product is not used immediately. The relative humidity should not exceed 95%, non-condensing.
Caution: This control provides half wave rectified power to the DC motor. Peak currents result in an RMS equivalent
current that may be considerably higher than with a full wave source of power. For this reason it may be necessary to
derate the motor to avoid overheating. Consult with the motor manufacturer and Gemini for specific information.
INSTALLATION
Carefully mount the chassis or enclosure allowing clearances for access, air flow and conduit entry. The environment should be
free of vibration and contaminants. The operating temperature range for the Gemini drive is 32 to 104 degrees Fahrenheit (0-
40C). Since the drive produces heat, utilize a source of cooling, such as a fan, when the ambient temperature approaches 104
degrees.
WARNING:
Do not drill or file the enclosure or chassis when the controller is installed, as metal
particles can cause shorts and damage.
WIRING
1. Input Wiring
a. Since the control will operate on either 115 or 230VAC, jumper(s) must be applied to obtain the required voltage. For
115VAC input, place a jumper between terminals "H1" and "H3", and another jumper between terminals "H2" and "H4". For
230VAC input, place a jumper between "H3" and "H2". Connect the AC line to terminals "L1" and "L2" (note wiring
diagram). Terminals "S1" and "S2" are used as wiring points when a line switch is used for ON-OFF control. Wire one pole of
a two pole switch to connect between terminals "L1" and "S2". Wire the other pole to connect "L2" and "S2".
If required, the chassis may be grounded at one of the unused holes. Input wire size must be in compliance with the National
Electrical Code and all local codes and restrictions.
: Do not connect line power to the motor terminal connections.
WARNING
b. Note the jumper terminals on the top circuit board. Install a small shunt type jumper at position "K" for a 115VAC input and
Models 12M6-42000 and 12M6-42001
Mounting
Input Voltage
Open chassis
115/230 VAC
NEMA 12 Encl. 115/230
Output V. Range
0 to 90/180VDC
1@115VAC, 2@230V
0 to 90/180
1@115VAC, 2@230V
Output Amps
HP
Cont. Max.
10
10
20
20
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Summary of Contents for Gemini GEN-PACK H-W 12M6-42000
- Page 1 Carefully mount the chassis or enclosure allowing clearances for access, air flow and conduit entry. The environment should be free of vibration and contaminants. The operating temperature range for the Gemini drive is 32 to 104 degrees Fahrenheit (0- 40C). Since the drive produces heat, utilize a source of cooling, such as a fan, when the ambient temperature approaches 104 degrees.
- Page 2 90VDC motor, or “J” for a 230VAC input and 180VDC motor. 2. Output Wiring a. Connect the motor to the “A1” and “A2” terminals of the drive. Do not operate the control without connection to the motor. b. Install a jumper for armature voltage feedback at position “I”. 3.
- Page 3 7. Adjust the current limit “CL” only as high as needed for the application, but not high enough to permit more than 10 amperes DC to the motor, as measured with a DC ammeter in series with the motor. This completes the drive setup. GEMINI CONTROLS LLC Phone (262) 377-8585 P.O. Box 380 W61 N14280 Taunton Ave.
- Page 4 Model 12M6-42001 Enclosure ADJUSTMENTS AND START-UP 1. Remove any speed reference signal. 2. Turn the deadband pot. “DEAD B” and the current limit “CL” potentiometer to their full counterclockwise position. 3. Turn the power on. The motor should not rotate, or if it does, it should only slowly accelerate. If it accelerates rapidly, the null adjustment is incorrect.