With Power On - Eaton Cutler-Hammer TRU-START Operation And Installation Manual

MODEL
TRU-015-P c/w DCI
TRU-020-DCIor
TRU-030-P c/w DCI
TRU-040-DCI or
TRU-050-P c/w DCI
TRU-080-DCI or
TRU-080P c/w DCI
TRU-125-DCI or
TRU-125-P c/w DCI
TRU-200-DCI or
TRU-200-P c/w DCI
TRU-300-DCI or
TRU-360-P c/w DCI
TRU-500-DCI or
TRU-500-P c/w DCI

4.5.2 WITH POWER ON

4.5.2.1 Run the motor up to full speed and command the starter off. If the motor
reaches zero speed from the DC injection cycle, close the switch to the Disable
Input to disable the braking.
4.5.2.2 Re-adjust the braking torque pot, RV2, if the actual braking time has to be
increased or decreased to bring the motor to zero speed.
4.5.2.3 Once the braking torque is set, then adjust RV1 to match the DC injection time
with the actual stopping time of the motor. Typically, the injection should cease
when the motor is at zero speed or shortly after. LD1, DC INJCT is an
indication of braking.
approximately 6 seconds.
ALLOW TIME FOR THE MOTOR TO COOL BEFORE ANOTHER
START / STOP SEQUENCE IS INITIATED
FREQUENT START / STOP COULD CAUSE MOTOR DAMAGE
MOTOR
AMPS RESISTOR (¼ W)
10
15
20
30
40
50
60
80
100
125
150
200
200
300
400
500
Each 10% graduation in RV1 corresponds to
WARNING
DUE TO OVERHEATING
PAGE 15
BURDEN EFFECTIVE CT
68 Ω
47 Ω
39 Ω
27 Ω
39 Ω
33 Ω
39 Ω
33 Ω
27 Ω
22 Ω
18 Ω
12 Ω
27Ω
18 Ω
22 Ω
18 Ω
RATIO
750 : 1
750 : 1
1500 : 1
2500 : 1
2500 : 1
2500 : 1
5000 : 1
8500 : 1