INM 5500 Rev 11
33
6 .2 .4
MTL5523V/MTL5523VL - Solenoid Alarm driver
Single channel, voltage controlled with line-fault detection, IIC
With the MTL5523V or MTL5523VL interface, an on/off device in a hazardous area can be
controlled by a voltage signal in the safe area. It is suitable for driving loads such as solenoids.
Line fault detection (LFD), which operates irrespective of the output state, is signalled by a safe-
area, solid-state switch which energises if a field line is open or short–circuited.
The VL version has a lower current capability to suit alternative load requirements - see datasheet.
Hazardous area
Safe area
Terminal
Function
1
Output –ve
2
ve
7, 8, 9
Line fault signal –ve
10
Line fault ve
11
Control –ve
12
Cve
13
Supply –ve
14
ve
6
5
4
3
2
1
7
8
9
10
11
12
13
14
Solenoid, alarm
or other IS device
+
–
Vs–
Vs+
20 to 35V dc
+
–
LFD
+
Control
V
PWR
STS
MTL5523V
PWR
STS
MTL5523VL
Figure 6 .13:
Top labels
for MTL5523V
& MTL5523VL
