Instruction Book
9829 2115 69 78
For 24 V AC: connect the supply cable to terminals 2 and 3 (only applicable to timer card
1900 0713 07 (cubicle 1900 5002 01)):
X3 (freeze contact - P4)
If you want to use the feature to “freeze” the regeneration cycle when the compressor runs
unloaded, connect pin 1 and 2 of connector X3 with the potential free contact of the
compressor (contact closed = freeze).
CAN-Bus connection
The timer card can be interconnected in a CAN LAN with other MkIV controllers. Addressing
and CAN protocol used are the same as for the MkIV Elektronikon regulators. Because the
timer card has no programming features however, the exchanged information is pre-
configured and cannot be redefined. Application: data communication between timer cards,
MkIV Elektronikon regulators and service PC.
Pin Function Pin Function Pin Function
1 reserved 4 reserved 7 CANJHIGH
2 CAN_LOW 5 reserved 8 reserved
3 CAN_GND 6 CAN_GND 9 reserved
PDP sensor connector (X1)
A PDP sensor can be obtained as an option. With the PDP sensor, the pressure dewpoint
(PDP) can be read from the display and the warning LED and alarm LED become active if
the PDP set point is not reached. The connections are as follows:
Pin Label Description
1 V
+
13.5 V out / 50 mA max
2 P01 4-20 mA input (40 mA max)
3 GND Ground
See configuration dip switch settings on next page.
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