An alternating relay is a type of electrical relay used primarily in applications where two or more loads (typically motors or pumps) need to be operated alternately rather than simultaneously. This type of relay helps to balance wear and tear, extend equipment life, and maintain energy efficiency. An alternating relay switches the load output between two (or more) devices each time the control signal is activated (e.g., from a float switch, pressure switch, or control contact).
The ARC/ARD Series is a duplexor that detects input of float switch inputs and determines outputs to turn on with line voltage. As the lag and lead switches open, the loads remain energized. When all switches open both loads de-energize simultaneously and the lead load alternates. The ARD series has a 3 position selector switch to lock it into normal duplexing action, 1-2 sequence or 2-1 sequence.
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.
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...
The Duplexor is used in control panels where two loads are required to alternate to provide equal run time on the loads. The alternating action is initiated by a control switch, which is common with one side of the control voltage. The output contacts will change states each time the control switch is opened, thus alternating the two loads. The LED indicators show the position of the output relay. The ARA Series is the standard Duplexor providing automatic alternating sequence. The ARB...
The Expandable Alternating Relays are designed for use in multiple load installations that are required to alternate in sequence and have the ability to accept an additional load installation in the future. In the event of a power failure the Alternating Relays will return to their quiescent state and continue sequencing loads on one-at-a-time. ATC Diversified offers two main models of the expandable alternating relay under the ARA Series: a Duplexor/Triplexor or a ...
The ARA120AHE is a special function TRIPLEXOR alternating relay designed for three load installations. The ARA120AHE has the option of alternating on each load cycle or by external clocking. This alternating relay also allows for additional loads to run in the event of excess load requirements. In the event of a power failure, the Alternating Relay will return to its quiescent state and continue sequencing loads on one-at-a-time. This model has a field selection switch that is used to omit one...
The Triplexor Alternating Relays are designed for use in MULTIPLE LOAD installations that are required to alternate in sequence while assuring equal run time on all loads. The triplexor is typically designed for three load installations.The triplexor also allows for additional loads to run in the event of excess load requirements. The Triplexor has the option of automatic alterations or external clocking alterations. When the factory installed jumper is in place in the...
The ARA120AJE is a special function TRIPLEXOR designed for three load installations. This model has a field selection switch that is used to lock the Alternating Relay into a desired sequence. The ARA120AJE has the option of automatically alternating on each load cycle or by external clocking. This Alternating Relay also allows for additional loads to run in the event of excess load requirements.The alternating action is initiated by the control switch...
