Handling Membrane Connectors - Siemens SINUMERIK 840D sl Manual

Pin
17
18
19
20
The inputs are electrically isolated for MCP / MPP / HAM and DTM.
1)
For the TCU, it is evaluated whether the direct keys have been connected.
2)
Power consumption: 100 mA for MCP / MPP / HAM; 500 mA for DTM
3)
Table 4-7
HIGH level:
Low level
4.2

Handling membrane connectors

When replacing parts it can sometimes be necessary to disconnect membrane connectors
from the boards and reconnect them again.
This should be done as follows:
(1)
Figure 4-2
Unplugging the membrane connector
1. Loosen the dark clamping frame of the socket by pushing it up with your fingernails until it
engages in its upper, unlocked position (Fig. left).
2. Carefully pull off the membrane connector upward.
Plugging in the membrane connector
1. With the clamping frame in the upper position, carefully plug the membrane connector into
the socket.
2. Lock it in place by pushing down the clamping frame (Figure right).
Operator panel front: OP 012
Manual, 05/2019, A5E36371591B AB
Name
P5V / CON1
2)
P5V / CON2
2)
GND
GND
Signal level
Clamping frame of socket
Removing (left) and attaching (right) a membrane connector
4.2 Handling membrane connectors
Type Meaning
+ 5 V input voltage
+ 5 V input voltage
V
Ground
Ground
5 V or open
<= 0.8 V
Connecting
3)
3)
33