Instruction Manual PMC-2
BA * PMC-2 * EN * 01/98 Page 37
If the option DC-circuit short circuit is used, the contacts O_DC-c_short circuit will have to be
switched in series (see drawings on next page; K7).
With T1-operation the digital outputs must be connected to auxiliary relays (K5). (The contacts of
the auxiliary relays must be switched in series to the spool of K2 -> see 6.2 The control loop).
-> see also 5. Wiring of the PMC-2 in the system
Depending on the application it can be dispensed with bleeders of individual appliances. Thereby
please consider the following:
• the bleeder transistor of the individual appliances is designed for the min. resistance indicated
in the data sheet. It must not be remained under this value.
• the bleeder resistance resulting from parallel switches and/or the leave out of individual
bleeders must be dimensioned in a way that it can destroy
- the peak brake performance of the parallelly switched PMCs
- the continuous brake performance without overheating.
Note:
The times P0.07, P0.16 and P0.17 should be equal in all parallelly switched PMC-2. Otherwise the
behaviour is determined e.g. by the shortest time P0.16 for switch-off and the longest time P0.16 for
switch-on.
Wiring (appliances with internal bleeder):
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