Eaton MTL5514D - MTL5511 - Switch;Proximity Detector Interface

INM 5500 Rev 10
25
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 (22k Ω and 680 Ω ) 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.
Vs–
Vs+
20 to 35V dc
22kΩ
680Ω
+
–
Output
Switch-type sensors
require resistors
if LFD is selected
6
5
4
3
2
1
7
8
9
10
11
12
13
14
Hazardous area
Safe are a




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
Figure 6.5:
Top label
for MTL5511