User guide

ManualsBrandsRoss Controls ManualsAccessories for airCATEGORY 3 - 3_2 VALVES SERIES DM1 E

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

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.

Summary of content (4 pages)

PAGE 1
DM 1 Series E New Product Introduction Control Reliable Double Valve with Dynamic Monitoring Size 2 Simplified Schematic Port Size CV Weight Model Number* In-Out Exh. In-Out Out-Exh. lb (Kg) DM1ENA20**31 DM1ENA21**31 1/4 3/8 1/2 1/2 1.34 2.43 1.92 2.43 5.0 (2.27) 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.
PAGE 2
Overview of DM 1 Series E Double Valve Function Valve de-actuated (ready-to-run): The flow of inlet air pressure into the crossover passages from the inlet chamber is restricted by orifices that allow air pressure to bypass the lower inlet poppets. Flow is sufficient to quickly pressurize the pilot supply/timing chambers on both sides A and B. The upper inlet poppets prevent air flow from the crossover passages into the outlet chamber.
PAGE 3
STANDARD SPECIFICATIONS Pilot Solenoid Power Consumption (each solenoid): 6.0 watts on DC; 15.8 VA inrush and 10.4 VA holding on AC. Solenoids: According to VDE 0580. Enclosure rating according to DIN 400 50 IP 65. Connector socket according to DIN 43650 Form A. Three solenoids, rated for continuous duty. Standard Voltages: 110 volts AC, 50/60 Hz; 24 volts DC. Temperature Range: Ambient: 15° to 122°F (4° to 50°C). Media: 40° to 175°F (4° to 80°C).
PAGE 4
ACCESSORIES ELECTRICAL CONNECTORS STATUS INDICATOR Wired connectors have a 2-meter (61/2 ft) cord with three 18-gauge conductors. Cord is available in either 6-mm or 10-mm diameter and with or without indicator light. The Status Indicator pressure switch actuates when the valve is in a ready-to-run condition and de-actuates when the valve is in a lockout condition or when the inlet air pressure has been removed.