Using the line contactor
Proceed as follows:
- Always place the line contactor before the line filter and line choke (if present).
- Use at least one contactor of utilization category AC‑3 (EN 60947-4-1) as a line contactor.
- After switching off the voltage supply, keep it switched off for at least 10 s.
- Do not switch the voltage supply on or off more often than once per minute.
- Do not use the line contactor for jog mode, but only for switching on and off.
The following table provides an overview of when a line contactor is required. Observe the information on the necessary protective measures for the braking resistor used in the Product manual > chapter Protecting the braking resistor against thermal overload.
Power supply module | Braking resistance | Protective element/preventive measure | Line contactor |
|---|---|---|---|
MDP90A.. | No BW.. | – | No |
BW.. | – | No | |
BW.. | External overload relay and | Yes | |
BW..-T | Internal temperature switch and | Yes | |
MDP90A.. | No BW.. | – | No |
Internal BW... | – | Yes | |
BW.. | – | No | |
BW.. | External overload relay and | Yes | |
BW..-T | Internal temperature switch and | Yes | |
for MDP90A.. and larger
| No BW.. | – | No |
BW.. | – | No | |
BW.. an | External overload relay and | No | |
BW..-T an | Internal temperature switch and | No | |
BW.. an | External overload relay and | Yes | |
BW..-T an | Internal temperature switch and | Yes | |
MDP92A..
| No BW.. | – | No |
BW.. | – | No | |
BW.. an | External overload relay and | No | |
BW..-T an | Internal temperature switch and | No | |
BW.. an | External overload relay and | No | |
BW..-T an | Internal temperature switch and | No |
