Mtl5511 - Switch/Proximity Detector Interface - Eaton MTL5501-SR Instruction Manual

6 .1 .5

MTL5511 - Switch/Proximity detector interface

Single channel, with line-fault detection
The MTL5511 contains a changeover relay, which enables a safe-area load to be controlled by a
switch or proximity detector located in a hazardous-area. When selected, the line-fault detect
(LFD) facility detects open or short circuit conditions in the field wiring and also indicates this on
the top of the module. Line-Fault Detect and Phase Reversal for the channel are selected by DIL
switches on the side of the module and output is provided by the changeover relay contacts.
See page 19 for LFD and PR switch details. Channel 1 only switch settings apply.
For switch sensor inputs, with LFD selected, make sure resistors (22kΩ and 680Ω) are fitted.
Note: For reliable, long-term operation the load on the output switching relay should be not less
than 50mW, e.g. 10mA at 5V DC.
Hazardous area
LFD
STS
MTL5511
PWR
Figure 6 .5:
Top label
for MTL5511
INM 5500 Rev 10
Safe area
6
5
4
680Ω
3
+
2
22kΩ
1
–
Switch-type sensors
require resistors
if LFD is selected
Terminal Function
1 Input –ve
2 Input +ve
10 Output normally-closed contact
11 Output common
12 Output normally-open contact
13 Supply –ve
14 Supply +ve
7
8
9
10
11
Output
12
13 Vs–
Vs+
14
20 to 35V dc
25