Ross Controls CATEGORY 3 - 3_2 VALVES SERIES DM1 E - Manual

DM 1 Series E
Control Reliable
Double Valve
with Dynamic Monitoring
Size 2
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New Product
Introduction
Category 3 applications - e.g. Air Dump/Release.
FEATURES:
APPLICATIONS:
Dynamic Monitoring: • Monitoring and air flow control functions are integrated into two identical valve elements
for CAT 3 applications. The valve exhausts downstream air if asynchronous movement of valve elements occurs
during actuation or de-actuation, resulting in a residual outlet pressure of less than 1% of supply. If the abnormality
clears itself, the valve will return to the ready-to-run state; there is no memory of the abnormal behavior, as in
ROSS’ DM
2® Series E and DM 2® Series C products that require an intentional reset following lockout.
Basic 3/2 Normally Closed Valve Function: • Dirt tolerant, wear compensating poppet design for quick response
and high flow capacity. Teflon back-up rings on pistons to enhance valve endurance – operates with or without
inline lubrication.
Ready-to-run:
• If an abnormality clears itself upon the removal of electricity to both solenoids, it will be ready-to-
run again. It does not remember the abnormality & stay in a locked-out state until intentionally reset. Therefore,
cumulative abnormalities may go undetected.
Status Indicator:
• The above products include a pressure switch with both NO & NC contacts to provide status
feedback to the control system indicating whether the valve is in the “ready-to-run” condition or has experienced
abnormal function. This indicator only reports status it is not part of a lockout function.
Silencers:
• All models include high flow, clog resistant silencers.
Mounting: • Inline mounted – with BSPP or NPT pipe threads. Inlet and outlet ports on both sides provide for
flexible piping (plugs for unused ports included).
This valve is not designed for controlling clutch/brake mechanisms on mechanical power presses.
Simplified
Schematic
Port Size C
V
Weight
Model Number* In-Out Exh. In-Out Out-Exh. lb (Kg)
DM1ENA20**31 1/4 1/2 1.34 2.43 5.0 (2.27)
DM1ENA21**31 3/8 1/2 1.92 2.43 5.0 (2.27)
* NPT port threads. For BSPP threads , replace “N” in the model
number with a “D”.
** Insert voltage code: “A” = 24 volts DC, “B” = 110 volts AC,
“C” = 220 volts AC, “D” = 12 volts DC.