SEARCH:     
< Marsh Bellofram Group of Companies < Diversified Electronics < Pump & Level Controls < ARM Series
Downloadable Files:
PDF icon ARM Alternating Controller
ARM Series Alternating Controllers
  • 3 & 4 Load Output Models
  • Intrinsically Safe Inputs
  • FIFO & SOSO Versions
  • Optional Omit/Lead Selection Switch
  • UL913 Listed Device
7m26
UL913
Product Detail:
These Triplex and Quadraplex Controllers are available with either
Sequence-On-Simultaneous-Off (SOSO) or First-On-First-Off (FOFO) output logic. The special function models are differentiated by a rotary switch that allows any output to be locked as the lead load or any one load to be omitted while sequencing only the remaining loads. In addition to load omission and lead selection, the expandable model can be set for 2, 3, or 4 load operation with either SOSO or FOFO logic.
All models feature intrinsically safe inputs and logic that allows the outputs to operate properly even if one of the inputs fails to open or close. For example: if the off switch fails to close, the lead load will not energize until both the lead and the lag switches close. An inrush delay on all models reduces line sags by preventing multiple loads from energizing simultaneously.
Part Numbers:
Create Model Number >>>>>
ARM
xx
xx
E
xx
Control Voltage
24
A
E
 xx
24 VAC
120 VAC
120
Number of Loads
Output Logic
Special
Functions
3
SOSO
none
3
FOFO
none
B
3
SOSO
Omit/Lead
Select
C
3
FOFO
Omit/Lead
Select
D
4
SOSO
none
G
4
FOFO
none
H
Enclosure
Style "E"
Mount
No Suffix, Surface Mount
P Suffix Panel Mount
P
Options:
Consult Factory.
Purchase Details:
Product Contact:
Sales Contact
Specifications:
Control Voltage 24 or 120 VAC ±10%, 50/60 Hz
Switch Voltage 5.1 Volts open circuit
Switch Current 10 µAmps short circuit
Power Required 2.5 VA
Sensitivity 100 k ohm
Isolation 2500V Input to Output
Duty Cycle Continuous
Response Times Power Up < 1 second
Operate < 25 mSec (switch closure)
Inrush 5 seconds
Release < 150 mSec.
Contact Rating All channels, SPST-N.O., 5 Amps per channel @ 24 or 120 VAC, Resistive; 278 VA, Inductive
LED Indicators ON when corresponding output is ON
Life Expectancy Mechanical 20 Million Operations
Electrical 50,000 Operations
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 with pressure clamps
Enclosure Style “E” Surface mount
Weight 16 oz.