AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 7 of 8
AMG5424R Instruction Sheet D17406-
00
The system detects a tri-state input condition on the data channel bus when in RS-485 or RS-422
mode.
Data Interface Connections
Data Channels 1 and 2.
Connector
Pin No.
Data Channel
RS-485
[switch top]
RS-422
[switch middle]
RS-232
[switch bottom]
1
IN + (A)
IN
2
IN - (B)
3
GND
GND
GND
4
5
6
7
IN/OUT + (A)
OUT + (A)
8
IN/OUT - (B)
OUT - (B)
OUT
Note: (A) or (B) in brackets in the above table refers to RS-485 / RS-422 data specification.
Alarm Channel Configuration
The
AMG5424R
provides one bi-directional alarm output / contact closure input per channel.
The alarm input is typically connected to a contact closure switch. An ALARM IN+ input incorporates a
330R pull-up resistor to the in3V3 supply.
The alarm output can receive an on/off signal from an
AMG5413
and is typically used to convey
contact closure status. An alarm output uses a solid-state relay, with a maximum load current of
150mA at 125Vac/d
c and Ron < 6.5Ω.
Alarm Interface Connections
Channels 1 & 2
Connector Pin
No.
Alarm Interface
Alarm IN
Alarm OUT
1
2
3
GND
4
ALARM IN +
5
ALARM OUT -
6
ALARM OUT +
7
8