User's Manual

Chapter 11 Appendix MDC-7000P/7900P Series
0093169006-05E 11-28
Alarm contact specification
Max. switching voltage 30 V
Max. current capacity 1 A
(Resistive load)
Note: Alarm contact will open in case of failure.
11.5.4 Serial data input/output specification (AIS)
Pin number Signal name
1
Shield
2 IN-A
3 IN-B
4 OUT-B
5 OUT-A
6 GND
7 NC
8 NC
Data connector pin assignment
I/O connector AIS (J2)
Connector used: BD-08PMMP-LC7001
Connector acceptable: BD-08BFFA-LL6001
Serial data input (Listener):
Standard signals conforming to IEC61162-2 is
acceptable.
Input load 500 Ohm
Circuit configuration: Photo coupler
Type ACPL-M61 (Avago)
Serial data output circuit (Talker):
Standard signals conforming to IEC61162-2 can be
output.
Circuit configuration: RS422 Driver/Receiver IC
Type SN65HVD3085 (TI)
Separated from ground level
1
2
3
4
7
8
5
6
J2
Data connector pin assignment
(Display unit upper view)
Note: Pin 7 and pin 8 are used for error detection input signal for AIS system.
It denotes [Short: Normal, Open: Error]. Please short #7 and #8 pin at AIS normal state.
OUT-A
Data output
OUT-B
SN65HVD3085
Serial data output circuit
alarm
alarm
HY1Z-5V
For external device
IN-A
IN-B
500
Data input A
+Vcc
A
CPL-M61
Data input B
Serial data input circuit