CMI ATC | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 1
Technical content
Diversified Electronics 800.727.5646 atcdiversified.com MODEL NUMBER CMI A S E CONTROL VOLTAGE
24 Volts 24
120 Volts 120
0.05 to 0.25 amp adj. .25 0.2 to 1 amp adj. 1 1.0 to 5.0 amps adj. 5 2.0 to 10 amps adj. 10 4.0 to 20 amps adj. 20 CURRENT MONITORS CMI Series AC Over Current Monitor The CMI Series AC OVER CURRENT Monitor Relay operates in the FAIL- SAFE MODEL as the relay is energized (pick-up) when the monitored AC current is normal. The relay de-energizes (Drop-out) when the monitored current rises above the preset trip point or the control volt- age is removed. When current is initially applied, a time delay begins. This inhibits the over current sensors while high inrush currents are present. The delay is field adjustable and is set so the delay period is slightly longer than the inrush time of the motor. If the monitored current is above the preset trip point when the delay elapses, the relay de-energizes. (Figure 1) If the current drops to the normal run current of the motor prior to the completion of the delay period, the relay remains energized until the current rises above the trip point, which indicates an abnormal condition. At that time the relay deenergizes and remains locked-out until the reset button is pressed or the control volt- age is interrupted, and re-applied. (Figure 2) A typical application is for conveyor jam up detection. An External CT may be used to extend the range of the Current Monitor. OPERATION DIMENSIONS (INCHES) SPECIFICATIONS CONTROL VOLTAGE 24 or 120 VAC, 50/60 Hz TRIP POINTS Pick-up See Order Information Drop-out Press Reset Button or Restore Control Voltage OUTPUT DPDT, 10 Amps @ 120 VAC, Resistive TIME DELAY 0.2 to 10 SEC, Adjustable On Motor Starting OPERATING TIME 50 mSEC (After Initial Delay has Timed Out) CURRENT 20 Times Nominal for 1 Second WITHSTAND ISOLATION 2500 Volts Between Input and All Other Terminals INDICATOR Glows on Normal Current RESET Manual, Press Button or Interrupt Control Voltage RESET TIME 100 mSEC After Lock-Out TEMPERATURE Operate 32° to 131°F (0° to +55°C) RATING Storage -49° to 185°F (-45° to +85°C) ENCLOSURE Lexan Surface Mounted; #8-32 Screw Terminals WEIGHT 11 oz. FIGURE 1 FIGURE 2 WIRING MODEL NUMBER FAIL SAFE DETECTION OF MOTOR JAM UPS Diversified Electronics 800.727.5646 atcdiversified.com