HEIDENHAIN TNC 370D - Manual (Page 23)

3–20 TNC 370 D Mounting and Electrical Installation July 02
3.7.8 Switching Outputs 24 Vdc for the PLC
Transistor outputs with current limiting
Logic unit PL 410 B/PL 405 B
Min. output voltage for “1” signal 3 V below supply voltage
Nominal operating current per output 0.125 A with simultaneity
factor of 0.5 1.2 A with simultaneity
factor of 0.5;
2 A with max. current
consumption of 20 A
· Permissible load: resistive load; inductive load only with quenching diode parallel to the
inductance.
· No more than one output may be shorted on the logic unit at any time. Short circuit of one
output does not cause an overload.
· No more than half the PLC outputs may be driven at the same time (simultaneity factor 0.5).
Address No. of outputs Device
O0 to O30 31 Logic unit X41 (PLC output)
O0 to O7 Logic unit X46 (machine operating panel)
O32 to O62 31 First PL 410 B
O64 to O94 31 Second PL 410 B
O48 to O62 15 PL 405 B
X44 Power Supply for the outputs of the LE
Terminal Assignment PLC outputs
1 +24 Vdc can be switched off via EMERGENCY
STOP O0 to O23
2 +24 Vdc cannot be switched off via EMERGENCY
STOP O24 to O30
3 0V
Power Supply for the outputs on the PL 410 B/ PL 405 B
Terminal Assignment 1st PL 410 B
Pl 405 B 2nd PL 410 B
X9 0 V
X10 +24 Vdc power supply for logic and for control-is-ready signal
X11 +24 Vdc power supply for outputs O32 to O39 O64 to O71
X12 +24 Vdc power supply for outputs O40 to O47 O72 to O79
X13 +24 Vdc power supply for outputs O48 to O55 O80 to O87
X14 +24 Vdc power supply for outputs O56 to O62 O88 to O94
For connecting the PL 410 B to the LE, see section 3.9.14.