ST950S Plus+ Installation and Commissioning Manual
Table 19. Double Stacked 10W IDC
Pin
Function
1
Not Used (b5V on connector 8)
2
Not Used (b5V on connector 8)
3
Signals on/off switch signal input
4
Signals on/off switch return (0V)
5
Cabinet Alarm LED Drive + +5V via 150R resistor
6
Cabinet Alarm LED Drive - MOSFET open drain output
7
Door Switch signal
8
Door switch return (0V)
9
Reset fault log button input signal
Top (Cabinet Sig
nals)
10
Reset fault log button return (0V)
11
+5V Fused (500mA)
12
RS232 DSR (Input)
13
RS232 RxD (Input)
14
RS232 RTS (Output)
15
RS232 TxD (Output)
16
RS232 CTS (Input)
17
RS232 DTR (Output)
18
Not Used
19
0V
Bottom (Aux
RS232)
20
Not Used
Functions:
Signals on/off switch (3,4) – This input allows an external switch to be used to control the signals on/off
state. If either the internal (on the manual panel) or external switches are in the ‘on’ position the signals
are requested on. (switch closed = signals on)
Cabinet Alarm LED Drive (5,6) – This output allows an external LED indicator to be installed to indicate
the cabinet alarm state. This output is current limited to 33mA under short circuit conditions.
Door Switch (7,8) – This input allows an external switch to be used to connect a cabinet door switch.
(switch closed = door closed) If either this input or the standard manual panel indicate door closed the
controller door state will be closed.
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