catalogue search
P. 01
P. 02
P. 03
P. 04
|
|
|
|
You may also be interested in
Pressure transmitter, Three phase relay, DIN rail power supply, Time delay relay, Transformer
Text version of the page
| v' C-mac | ||||||||||||||||||||||||||||||
| Power guard RP91 | ||||||||||||||||||||||||||||||
| Power guard for 1- and 3-phase motors Power metering (UxIxcos 9) Adjustable time-delay 0.1-30 sek. at start-up Adjustable reaction delay 0.1-30 sek Metering output indicates the power consumption 1-pole relay output8A/250VAC Produced in accordance with C € and EMC regulations | ||||||||||||||||||||||||||||||
| C-mac® module type RP91 is used for power monitoring of 1-phase and symmetrical 3-phase loads, f.inst. motors. RP91 can be connected directly to loads with nominal current consumption up to 6 A; If the current is bigger, a standard current transformer is used. The unit is supplied with an adjustable start-up delay, which ensures that the output relay is activated independant of the load, when the motor is started. RP 91 is supplied for both over- and underload monitoring. The module is monitoring the total power consumption (U x I x cos cp) which gives a much higher sensitivity than it is possible with the RP81. The setpoint is coarse adjusted on a 10-position switch, and fine-adjusted on a potentiometer in front of the unit, which gives a very high sensitivity on the adjustment function. When the setpoint is reached, an adjustable time-delay on 0,1 to 30 seconds starts. After this period, the relay releases, on the condition that the load has been higher than the setpoint in the whole period, in this way it is ensured, that the relay will not release in case of short changes in the power consumption. In order to get the most accurate setpoint adjustment, especially when very small loads are monitored, the unit is supplied for 4 different current ranges, and all units are available with inverted function, to detect underloads. | ||||||||||||||||||||||||||||||
| pin 8-7. If pins 8-7 is connected, and the relay releases, it will remain released, no matter if the load changes, until the connection is opened, or the supply voltage is disconnected. Potentiometer, 0.1-30 sec. 10-position switch on the top of the unit. Potentiometer, scale 0-10 Potentiometer, 0,1-30 sec 5% Supply voltage connected Relay activated start contact, pins 6-7. If pins 6 and 7 is connected, the relay and the start-up delay is activated, when the supply voltage is connected. This principle is used, if the unit is connected in parallel with the load. If the unit is constantly connected to the supply voltage, the start delay (and the metering) can be separately activated by connecting pins 6 and 7, f.inst. with a spare contact in the motorswitch. | ||||||||||||||||||||||||||||||
| Latch: | ||||||||||||||||||||||||||||||
| Adjustments: Start-up delay: Level, coarse: Level, fine: Reaction delay: Accuracy, scale: Indications: Green LED: Red LED: Start-up: | ||||||||||||||||||||||||||||||
| Technical data: Supply voltage: | ||||||||||||||||||||||||||||||
| 127V + Nor3 x230V+/-10% 230V + Nor3 x400V+/-10% 240V + Nor3x415V+/-10% 40-70 Hz 2,5 VA -20°C to +60°C 0 - 90% RH, non-condensing | ||||||||||||||||||||||||||||||
| Functional diagram: supply setpoinkt hysteresis Load latch contact LED, level relay, normal relay, inv. | ||||||||||||||||||||||||||||||
| Supply frequency: Power consumption: Operation temp.: Humidity: | ||||||||||||||||||||||||||||||
| Metering ranges: max. load at supply voltage: Current range_230V 400 V 415 V int. shunt 01: max. 0,6 A 270 W 450 W 480 W 1,200 Q 02: max. 1,2 A 540 W 900 W 960 W 0,150 Q 03: max. 2,4 A 1100 W 1800 W 2000 W 0,068 Q 04: max. 6,0 A 2700 W 4500 W 4800 W 0,033 Q Hysteresis: 1,3% of the total metering range | ||||||||||||||||||||||||||||||
| t = selected start-up delay, t2 = reaction delay 6-3 | ||||||||||||||||||||||||||||||
| Comadan | ||||||||||||||||||||||||||||||
| Produktion a/s | ||||||||||||||||||||||||||||||