Eaton Crouse-Hinds MTL5500 Series Instruction Manual page 83

10 .4 .2 Trip calibration
Switches and multiturn potentiometers for setting the trip points are located on top of the unit
(see figure 10.7). For each of channels A and B:
Figure 10 .7:
Top label
for MTL5314
75
Terminal Function
1 Current input
2 Transmitter supply +ve
3 Common
7 Trip B (NC)
8 Trip B (COM)
9 Trip B (NO)
10 Trip A (NC)
11 Trip A (COM
12 Trip A (NO)
13 Supply –ve
14 Supply +ve
i Set trip switch to H (high) or L (low) as required (see table 10.4
for relay operation).
ii Set input current to the required value for trip-point.
iii Adjust SET A/SET B until LED A/B is on: then slowly adjust until
LED goes out.
iv Relays are energised in normal operation and de-energised when
tripped. A lit LED shows the safe condition (not tripped).
Table 10 .4
Trip Operation
switch
A or B
H (high) Input > trip setting
H (high) Input < trip setting
L (low) Input > trip setting
L (low) Input < trip setting
- -
PWR A or Relay contacts
LED B
11 - 12 10 - 11
LED
8 - 9 7 - 8
• open closed
closed open
closed open
• open closed
• • open closed
INM 5500 Rev 11