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Marsh Bellofram Diversified Electronics Division ARM Series Integrated Duplex Controller

Marsh Bellofram Diversified Electronics Division ARM Series Integrated Duplex Controller
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Marsh Bellofram Diversified Electronics Division ARM Series Integrated Duplex Controller - 1

800.727.5646 atcdiversified.com Diversified Electronics ARM Series 255 Integrated Duple x Contro l ler The ARM Series Alternating Relay is a microprocessor-based controller designed for use in dual load installations to assure equal run time on each load. LED indicators show the status of the unit’s five intrinsically safe control switch inputs, one alarm, and two load outputs. H-O-A switches, a lead select switch, and a test/clear button are provided for manual control. The ARM Series reduces the number of components required for this application by combining many functions into one unit. TWO PUMP SEQUENCING: Evenly distributes run time by automatically alternating lead and lag load designations when the off control switch input opens. UL913 INTRINSICALLY SAFE: Control switch inputs are low voltage/low current and are electronically isolated from the control voltage and loadalarm contacts. H-O-A Switches: Hand-of-automatic switches allow for manual operation. LEAD SELECT SWITCH: Disables the automatic sequencing function and allows loads to be locked into the 2-1 or 1-2 sequence. CONTROL SWITCH FAULT DETECTION: Unit detects open and shorted control switch failures. TEST/CLEAR SWITCH: Verifies function and resets the control switch fault detection algorithm. ALARM OUTPUT: Alarm contacts close when a control switch fails or the system’s capacity is exceeded. INRUSH CURRENT DELAY: Reduces line sags by preventing both loads from energizing simultaneously. VERSATILE MOUNTING: Two (2) mounting configurations are available. The standard surface mount has top access to controls and indicators and is intended for back panel mounting. The panel mount option is intended for front panel or door cutout access to controls and indicators. SPECIAL CONTROLS: ARM-2003 and ARM-2010–Standard operation without the HOA switches ARM-2011–Standard operation without the Control Switch Failure feature. Alternating Relays & Controllers // ARM Series 7m26 UL913 \\\SPECIFICATIONS CONTROL VOLTAGE 24 or 120 VAC ±10%, 50/60 Hz CONTROL SWITCH Open Circuit Voltage 5 VDC Short Circuit Current 0.1mA POWER REQUIRED 4 VA Maximum DUTY CYCLE Continuous RESPONSE DELAYS Power Up 3 SEC. ±5% Inrush Current 5 SEC. ±5% CONTACT RATING (3) SPST-N.O. 10 Amp Resistive, 1/4 hp, 278 VA Inductive @ 120 VAC LED INDICATORS Designation Color State Condition Level/Alarm Red ON cs5 Closed Lag Green ON cs4 Closed Lead Green ON cs3 Closed Off Green ON cs2 Closed Aux. Off Green ON cs1 Aux./cs2 Closed Load 1 Green ON Load ON Load 2 Green ON Load ON Ctrl. Switch Red ON Failure Open/Closed LIFE EXPECTANCY Mechanical 20 Million Operations Electrical 75,000 @ Rated Load TEMPERATURE RATING Operate -4° to 131°F (-20° to +55°C) Storage -40° to 185°F (-40° to +85°C) TERMINATIONS (12) #8-32 Screw Terminals WEIGHT 16 oz. \\\ORDERING INFORMATION MODEL NUMBER CONTROL VOLTAGE MOUNTING COMMENTS ARM-XXX-AFE* 24 or 120 VAC Surface Standard ARM-XXX-AFEP* 24 or 120 VAC Panel Standard ARM-2003 120 VAC Surface Special: w/o HOA switches ARM-2010 120 VAC Panel Special: w/o HOA switches ARM-2011 120 VAC Surface Special: w/o Control switch failure feature *Replace XXX with desire control voltage (24, 120) INCLUDES INTRINSICALLY SAFE INPUTS

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Marsh Bellofram Diversified Electronics Division ARM Series Integrated Duplex Controller - 2

ARM Series Diversified Electronics atcdiversified.com 800.727.5646 256 Alternating Relays & Controllers // ARM Series FOUR CONTROL SWITCHING: Do not remove factory-installed jumper between terminals 2 and 3. The control switches connected to terminals 3 through 6 are labeled OFF (cs2), LEAD (cs3), LAG (cs4) and ALARM (cs5). Under normal operation the lead load energizes when the off and lead control switches close in order. The lag load energizes when the lag closes and the alarm load energizes when the alarm switch closes. When all four switches reopen in the proper order all outputs are...

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