Current Monitor Relay • Type: Overcurrent • Coil Voltage: 120 VAC • Contact Configuration : 1C SPDT • Mounting: 11 Pin Plug-in • Current Range Monitored: See Data Sheet • Indicator LED: Green when Input Voltage is applied; Red when Relay is energized
Mechanical: 10,000,000 operations Full Load: 100,000 operations
Temperature: Operating
-28o to 55o C (-18o to 131o F) Storage: -40o to 85o C (-40o to 185o F)
Mounting
Requires an 11 pin octal socket (Macromatic 70170-D) that can be mounted on 35mm DIN rail or panel-mounted with two screws
Series Features
CAP Series AC/DC Overcurrent
Series Description:The CAP Series current sensing relay is used to detect an AC or DC overcurrent condition. It has two operating modes: non-latching or latching. Each relay has three top-mounted potentiometers: one for selecting the pick-up setting within the selected monitored current range (“Threshold”), one for selecting the drop-out setting of 5-50% below pick-up setting (“Hysteresis”), and one for setting the start- up sensing delay (ts). This delay, which is adjustable from 0.1 - 10 seconds, inhibits energization of the output relay during the start-up period.
CAP Series relays have three built-in current ranges (see right) to monitor both AC & DC current. Each one is easily selectable by connecting to the corresponding terminal and to the COM terminal (see Wiring Diagram below)
Non-Latching Mode: The unit will operate in the non-latching mode if no circuit is completed across pins 9 & 11. After input voltage is applied (LED is Green) and the start-up sensing delay (ts) of 0.1 - 10 seconds is completed, the relay will energize when the monitored current is above the adjustable pick-up setting (“Threshold”). The LED will be Red. It will de-energize when the monitored current goes below the adjustable drop-out setting (“Hysteresis”) by 5-50% of the selected pick-up setting or when input voltage is removed. The LED will be Green.
Latching Mode: The unit will operate in the latching mode if a N.C. contact (Memory S2) is connected across pins 9 & 11 (see Wiring Diagram). After input voltage is applied (LED is Green) and the start-up sensing delay (ts) of 0.1 -10 seconds is completed, the relay will energize when the monitored current is above the adjustable pick-up setting (“Threshold”). The LED will be Red. It will de-energize when the monitored current goes below the adjustable drop-out setting (“Hysteresis”) by 5-50% of the selected pick-up setting and the N.C. contact (Memory S2) is opened, or when input voltage is removed. The LED will be Green. It is recommended to set the Hysteresis at 5% when in the latching mode.
Equivalent to LIRT and DIRT products from Crouzet
Monitors for overcurrent conditions
Each unit can monitor three current ranges for both AC & DC
External CT can be used to extend ranges
Adjustable Pick-up & Drop-out Setting
Adjustable Sensing Delay on Power-up
Non-Latching & Latching modes
LED indicates relay status
11 Pin Plug-in socket can be DIN rail-mounted or panel-mounted
RoHS Compliant