TM 5-3895-374-24-1
Connections
Alternative
circuit diagram
The power and the control circuits are supplied simultaneously
It Is recommended to use the safety relay for signaling, should the speed controller lock
out (terminals SA-SB).
Drawback of this solution
- no fault signal memory In the event of line contactor drop out
Other possibilities
Replacement of the Isolator-fuses-contactor with
-either a circuit breaker,
- or a contactor breaker type integral 32/63
Recommendations
WARNING -
there Is a possibility of condensation, It is recommended to keep the control supply
switch
HUMIDITY
Check the power connections before switching on If, due to a wiring error,
mains voltage is applied to output terminals U/T1, V/T2. W/T3, the speed
controller will be damaged - Avoid on-load switching between the speed
controller output and the motor - If a contactor is required for switching
between the speed controller and the motor, it is necessary to use a special
sequence (p 33).
(page 3- 75)
