SAF OP-STOP DCI - Manual (Page 18)

OP-STOP DC INJECTION BRAKE
Page 13
4.4 WIRING GUIDELINES
Follow all local electrical codes for installation requirements and wire sizing. Size the power wiring
as per local code and on long wire runs it is recommended to use a larger wire size.
Power factor correcting capacitors MUST NOT be connected to the OP-STOP output. If desired,
they must be connected on the line side of the unit. Capacitors can be connected before starting or
preferably after the motor has reached full speed.
4.5 START UP
4.5.1 CHECKS BEFORE POWER-UP
4.5.1.1 Ensure that all electrical connections are completed as shown on schematics in section 6,
and that connections are properly tightened. The most important connection is the
interlock between the OP-STOP and the starter.
4.5.1.2 Ensure that the burden resistor is equal or larger than the value listed in the table below or
calculated by the following equation:
Rb = Effective Current Transformer Ratio ÷ Motor Nameplate Amps
4.5.1.3 Set JP1 link to LO.
4.5.1.4 Adjust RV2, braking torque, and RV1, braking time to 50%
4.5.1.5 Install a Disable switch between terminals 2 and 4 of J3 in the open position. Switch is to
be closed once the motor has reached zero speed or if any problems occur during
braking.
4.5.1.6 If a Disable switch is not used, then set RV2 to 30%, about 20 seconds or lower.
WARNING!
DO NOT OPEN LOAD SIDE DISCONNECT DEVICE DURING DC
INJECTION CYCLE. FAILURE TO OBSERVE THIS WARNING WILL
RESULT IN DAMAGE TO THE DISCONNECTING DEVICE AND MAY
CAUSE PERSONAL INJURY.