5
FACTORY AUTOMATION
®
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Series 135 Motogard
The Series 135 Motogard is designed to take in up
to 3 Thermistors wired in Parallel, and has a Form C
Mechanical Output relay.
Connections
Power Connections:
The 135 Series Motogard relay is designed to operate
off of /-10%, Single Phase, 50/60Hz.
Connect 120VAC to input terminals 1 and 2.
Thermistor Connections:
1. Connect one lead of each Thermistor to terminals
6, 7, and 8 respectively.
2.
Connect other leads of each Thermistor to
Common terminal 9.
3.
Maximum number of Thermistors in parallel:
Three (3)
4. Note: If using less than 3 Thermistors. Any
unused input – Install a 150 Ohm 1/2W resistor
from sensor common (terminal 9) to any unused
input.
Output Load Connections:
1. Terminals 3, 4 and 5 comprise a set of “Form C”
contacts with terminal 4 common, Terminal 5 is
the open side and terminal 3 is the closed side.
2. Be sure power is never applied directly across the
contact but always in series with the load.
3. Maximum allowable load – 5 Amps at 120/240VAC
or 28VDC.
4.
The closed output of the Motogard Over
temperature Protection System has been
specifically designed to operate directly in series
with most main line contactors. If contact current
is greater than 5 Amps at 115VAC, an interposing
relay must be used.
5. The open output of the Series 135 relay can be
used for trip indication.
