Installation manual

Geo Direct PWM Amplifier
Connector PinOuts and Wiring 29
The black wires are for the thermostat and the white wires are
for the shunt resistor.
The shunt resistor incorporates a normally closed (N.C)
thermal overload protection thermostat that opens up when the
core temperature of the resistor exceeds 225°C (450° F). This
thermostat is accessible through the two black leads. It is
important that these two leads be wired in a safety circuit to
halt operation should the resistor temperature exceed the
specified threshold.
The external shunt resistor Ohm rating range is found so that
the minimum value limits the current to the permissible
amperage, and that the maximum value limits the bus (during
deceleration) to the permissible voltage.
Safety
Logic
Circuit
Regen+
Regen-
Hot!
Note
For GPL models, the shunt circuitry turn-on threshold is 392 VDC
(~278 VAC). The turn-off threshold is 372 VDC (~263VAC).
Note
For GPH models, the shunt circuitry turn-on threshold is 784 VDC
(~555 VAC). The turn-off threshold is 744 VDC (~526VAC).
Recommended Shunt Resistors
Model
Ω
W
Peak
Power(W)
Pins
Shunt
Resistor
Model
Ω
W
Peak
Power(W)
Pins
Shunt
Resistor
GPL011
48
150
3,134
2
GAR48
GPH011
78
150
7,971
2
GAR78
GPL031
48
150
3,134
2
GAR48
GPH031
78
150
7,971
2
GAR78
GPL051
22
300
6,839
2
GAR22
GPH051
78
150
7,971
2
GAR78
GPL101
22
300
6,839
2
GAR22
GPH101
48
300
12,455
2
GAR48
GPL151
10
300
15,045
2
GAR10-2
GPH151
22
300
27,175
2
GAR22
GPL201
10
300
15,045
3
GAR10-3
GPH201
15
300
39,856
3
GAR15-3
GPL301
10
300
15,045
3
GAR10-3
GPH301
15
300
39,856
3
GAR15-3
GPL012
48
150
3,134
2
GAR48
GPH012
78
150
7,971
2
GAR78
GPL032
48
150
3,134
2
GAR48
GPH032
78
150
7,971
2
GAR78
GPL052
22
300
6,839
2
GAR22
GPH052
48
150
12,455
2
GAR48
GPL102
22
300
6,839
2
GAR22
GPH102
48
150
12,455
2
GAR48
GPL152
10
300
15,045
2
GAR10-2
GPH152
22
300
27,175
2
GAR22