12
Rockford Systems, LLC—www.rockfordsystems.com
Call: 1-800-922-7533
DM
2
Series D Dual-Solenoid Valves
SECTION 5 —INSTALLATION
ELECTRICAL CONSIDERATIONS
DIN Connectors
Each DM
2
Series D dual-solenoid valve is furnished with two 3-pin DIN connectors for electrical connection to the pilot solenoids.
See page 15 for replacement connectors and/or for electrical connectors with a light and translucent housing to serve as indicator
lights.
WIRING
Pilot Solenoids—Should be fired simultaneously from separate channels to operate the valve normally.
Status Indicator (Pressure Switch) Terminal Designations
Terminal 1 - common
Terminal 2 - N.C. (normally closed) contact (N.O. contact held closed with normal operation and inlet pressure within specifications)
Terminal 3 - N.O. (normally open) contact (N.C. contact held open with normal operation and inlet pressure within specifications)
Ground symbol terminal - not used
Terminals 1 and 3 are connected when air pressure is present and the valve is ready-to-run. If a fault has occurred or pressure is
removed from the valve inlet, terminals 1 and 2 are connected.
Pilot Solenoid
A
Signal A
Common
Status Indicator
(pressure switch)
4
3
2
1
Pilot Solenoid
B
Signal B
Common
Reset
Solenoid
Reset Signal
Common
Pin 1: Common
Pin 2: Normally Closed
Pin 3: Normally Open
Pin 4: Not Used
Note—In the event of a fault, remove power from pilot solenoids A & B, then momentarily energize the reset solenoid to return the
valve to the ready-to-run state. Wait at least 250 ms after removing power from the reset solenoid before trying to re-energize the
pilot solenoids.
Pilot Solenoid
A
Signal A
Common
Status Indicator
(pressure switch)
4
3
2
1
Pilot Solenoid
B
Signal B
Common
Reset
Solenoid
Reset Signal
Common
