OTHER CONSIDERATIONS:
HEATSINKING: The G203V needs heatsinking for current settings greater than 3 amps. The case temperature (measured on the
bottom plate) should not exceed 70 degrees C, and for best life should be kept at 50C degrees or less. Use heatsink compound
between the G203V and your heatsink.
CAUTION! Current settings above 3A without a heatsink may result in the G203V entering thermal shutdown.
AUTO CURRENT REDUCTION: The G203V reduces motor phase current to 71% of the set current value 1 second after the last
step pulse is sent. The G203V also changes to a special recirculating current mode to nearly eliminate motor heating.
ADJUST: This trimpot adjusts the motor for the smoothest possible low-speed operation. Set the motor speed to about 1/2
revolution per second and then turn the trimpot until a distinct null is noted in the motor’s vibration. This will result in the most
even microstep placement for a given motor and power supply voltage. The default setting for this trimpot is at ½ -turn and the
setting for your motor will be /- ¼-turn of the default setting.
MAIN CONNECTOR: The G203V uses a 2-piece modular main connector. The connector is split in two pieces; terminals 1 thru 6
(power supply and motor leads) and terminals 7 thru 12 (control interface). Each can be removed separately by pulling the
connector body up and away from the top surface of the G203V. Remove the connectors to access the G203V front mounting
screw locations in order to mount it to a heatsink or chassis.
G203V INDICATORS:
POWER LED: The GREEN POWER indicator is lit whenever the G203V has power supply voltage applied.
FULL POWER LED: The YELLOW FULL POWER indicator is lit when the motor is turning fast enough to generate maximum possible
mechanical power. Power is torque times RPM and power output reaches its maximum value when this indicator is lit. Use this
indicator to verify your motor is optimally geared to the load.
ERROR LED: The RED ERROR indicator is lit when:
1)
During power-on reset for 1 second when power is first applied to the G203V.
2)
While the DISABLE input is active.
3)
When there is a short-circuit on any motor output. Momentarily activate the DISABLE input to reset.
4)
During over-temperature shutdown. The LED automatically resets when the drive temperature drops.
INTERNAL FUSE: The G203V uses a socketed, user-replaceable internally mounted fuse (Littlefuse Inc. part # 0251005.MXL).
Reversing the power supply polarity or a power supply voltage over 114VDC will cause the internal fuse to blow.
CAUTION! Do not use any other type of fuse, do not bridge a blown fuse with wire and do not solder the fuse in place. Doing so
will void the drive’s warranty.
REMOVING AND REPLACING THE COVER:
REMOVING THE COVER:
1)
Remove the two 2-56 Phillips-head screws on the bottom of the drive.
2)
Slide the cover backwards until it clears the drive.
REPLACING THE COVER:
1)
Slide the cover forward over the drive while lifting the back of the cover.
2)
Replace the screws on the bottom of the drive.
It is recommended to use small needle-nose pliers or tweezers to move the jumpers on the internal headers.
