EFAC230 Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – Current and Voltage Controls Frequency Monitoring Control

EFA
General Specifications
Mode of Operation
Power ON delay
Power OFF delay
Reaction time
Accuracy
Frequency
Time delay
Temperature drift
Hysteresis
Indication for
Power supply ON
Output ON
Environment
Degree of protection
Pollution degree
Operating temperature
Storage temperature
Weight
Screw terminals
Tightening torqu
Approvals
200 ms
> 250 ms @ 230 VAC
≤ 400 ms
0.01%
0.1-30 s ±15%
≤ 0.01%/°C (≤ 0.006%/°F)
≤ 0.5%
LED, green
2 LED's, yellow (indicating
upper/lower level)
IP 20
3
-10° to +50°C (-14° to +122°F)
-50° to +85°C (-58° to +185°F)
250 g
EFA measures the frequency
of its own sinusoidal power
supply, and the output relay is
energized as long as the fre-
quency is within the set up-
per/lower limits. This is indi-
cated by the two built-in yel-
low LED's.
If the frequency drops below
the set lower limit, then the
right yellow LED starts to flash
and the output relay releases
after the set time period.
There will be no LED-indica-
tion after the time delay has
expired.
If the frequency rises above
the set upper limit, then the
centre yellow LED starts to
flash and the output relay re-
leases after the set time pe-
riod.
EFA has a power ON delay of
approx. 200 ms to prevent the
relay from operating under in-
rush conditions.
Max. 0.5 Nm acc. to IEC 60947
UL, CSA
Wiring Diagram
L
µ
N
Range/Time Setting
Range setting
Upper left knob:
Setting of upper limit on rotary
switch.
Lower left knob:
Setting of lower limit on rotary
switch.
Frequency range setting
Upper right knob:
Rotary switch for selection of
frequency range.
Time setting
Lower right knob:
Setting of time delay on abso-
lute scale (0.1-30 s) for lower
frequency range.
Centre right knob:
Setting of time delay on abso-
lute scale (0.1-30 s) for upper
frequency range.
Operation Diagram
Power supply
Upper frequency limit
Hysteresis
Lower frequency limit ^Hysteresis
Relay 2 upper ( 25/26/28)
Relay 1 lower ( 15/16/18)
2
Specifications are subject to change without notice (26.10.99)