LMS
‐
BMS
Operating
Manual
Page
13
DC POWERED SOLENOID CONTROL
HARDWARE SUPPLIED BY OTHERS
Description:
This solution is for systems that utilize a DC powered solenoid valve and want to make use of the SPDT relay
switch included with LMS-188-4P-BMS.
Solenoid valve and associated power supply are to be provided by
others.
Application:
The primary application is in systems where it is desirable to control a DC powered solenoid in the event that
the alarm on the LMS-188-4P-BMS is active. When in non-alarm condition the relay is in a N.O. state and the
solenoid will allow water to flow through it freely. Once the alarm is active, the relay on the LMS-188-4P-BMS
will switch to N.C. and the solenoid will shut down.
Solenoid valve and associated power supply are to be
provided by others.
Installation:
Solenoid power supply is to be supplied by others and is not available from Leonard Valve. The relay contacts
are rated up to 30 V/1A. See wiring diagram below for reference. Do Not Energize LMS-188-4P-BMS or
solenoid valve until wiring is complete.
Solenoid valve and associated power supply are to be provided by
others.
1.
Connect positive side of power supply to the
COMMON
terminal (
2
).
2.
Connect either terminal
1 or 3
from LMS-188-4P-BMS relay switch to positive side
of DC solenoid. Use terminal
1
with N.C. solenoids; use terminal
3
with N.O. solenoids.
3.
Connect neutral side of power supply directly to neutral side of DC solenoid.
