Installation manual

GEO Direct PWM Amplifiers – Preliminary Documentation
System Wiring 21
24V Logic Supply Connector Pin Out
Pin # Symbol Function Description Notes
1 24V RTN Common
Control power return
2 24V Input
Control power input
24V+/-10% 3 Amp
Wiring the Motors
The cable wiring must be shielded and have a separate conductor connecting the motor frame back to the
drive amplifier. The cables are available in connector kits (CONKIT1 or CONKIT1A) from Delta Tau or
the terminations can be made as described in Appendix A.
Motor phases are conversed in one of three conventions. Motor manufacturers will call the motor phases
A, B, or C. Other motor manufacturers call them U, V, W. Induction motor manufacturers may call them
L1, L2, and L3. The drive's inputs are called U, V, and W. Wire U, A, or L1 to the drive's U terminal.
Wire V, B, or L2 to the drive's V terminal. Wire W, C, or L3 to the drive's W terminal.
The motor's frame drain wire and the motor cable shield must be tied together at the mounting stud on top
of the GEO drive product. Tighten the nuts to 5 inch-pounds.
AXIS MTR Output Connector Pin Out
Pin # Symbol Function Description Notes
1 U Phase1 Output Axis 1
2 V Phase2 Output Axis 1
3 W Phase3 Output Axis 1
AXIS 2 Motor Out Connector Pin Out
Pin # Symbol Function Description Notes
1 U Phase2 Output Axis 2 2- Axis drives only
2 V Phase2 Output Axis 2 2- Axis drives only
3 W Phase2 Output Axis 2 2- Axis drives only
Wiring the Motor Thermostats
Some motor manufacturers provide the motors with integrated thermostat overload detection capability.
Typically, it is in one or two forms: a contact switch that is normally closed or a PTC. These sensors can
be wired into the GEO drive's front panel at connector X3. Motor 1 is wired to Motor1 PTC return and
Motor1 PTC. These contacts have to be low impedance for the drive to be operational. Motor 2 can be
wired to Motor2 PTC return or thermostat switch can be wired to red MTR2 PTC return and MTR R2
return. If the motor overload protection is not required, these inputs can be jumpered together to disable
this function in the drive. The connection of these signals to the Geo Drive is dependent on the MACRO
or PWM versions.