A-5
TP27, TP37 Equipment Manual
Release 01/00
A.1 Direct Key Module and Control Panel Interface
Direct key module (DKM)
Voltage supply for outputs, load voltage supply and internal logic circuitry
Voltage supply
S rated value
S permissible range
S value at t < 0.5 sec
+ 24 V DC
+18.0 to +30.0 V
35 V
Power consumption of logic circuitry 50 mA
Short-circuit protection upon polarity rever-
sal of load voltage
4
Outputs
3)
No. of outputs 8 per module
Output voltage
S with signal “0”
S with signal “1”
Max. 2 V (idling)
Min. (voltage supply –3 V)
Output current
S with signal “0”
S with signal “1”
Max. 1 mA
Max. 300 mA per output
Switch rate at
S resistive load
S inductive load
S lamp load
Max. 100 Hz
Max. 0.5 Hz
Max. 8 Hz
Short-circuit current Max. 500 mA per output
Note:
With inductive loads, an external free-wheeling diode must be used directly on the load.
3)
Outputs are isolated by means of optocouplers.
Technical Data
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