RF20, frequency relay0 pages

C-mac

®

Frequency relay RF20

Relay for monitoring of the supply frequency
Nominal frequency selectable 50 Hz or 60 Hz
Adjustable bandwidth from 1 to 10 Hz
Selectable reaction delay 0.1 sec. or 1 sec.
1- or 2-pole relay output
Made in accordance with the
and EMC regulations

C-mac® frequency relay type RF20 is used for monitoring EMC and safety regulations.
of the supply frequency, f.inst. in connection with genera- Emmision:
EN 50 081 - 1
tor controls.
Immunity:
EN 50 082 - 2
By means of connections on the relay base you can select Safety:
EN 60 730
between nominal frequency of 50 or 60 Hz and reaction Approvals: The units are produced in accordance with the CE
delay 0.1 sec. or 1 sec.
og low voltage regulations.
On the built-in potentiometer, the bandwidth is adjustable
between +/- 0.5 Hz and +/- 5 Hz.
If the supply frequency is within the adjusted bandwidth,
the relay is activated, and if the frequency is outside the liFunctional diagram:
mits, the output relay releases after the selected reaction
delay.
supply
Common technical data:
Supply voltage, AC:
Supply frequency:
Isolation voltage:
Power consumption:
Operation temp.:
Humidity:
Adjustments:
Bandwidth:
Indications:
Green LED:
Red LED:
Accuracy:
scale:
min. bandwidth:
max. bandwidth:
Hysteresis:
Nominal frequency:
Reaction delay:
Max. load, relay:

24, 115 and 230 VAC +/- 10%
40-70 Hz
Supply - input - output: 3.75 kV
2,5 VA
-20°C to +60°C
0 - 90% RH, non-condensing
Potentiometer, scale 1 to 10 Hz
(+/-0.5 Hz til +/-5 Hz)

setpoint
hysteresis
nom.freq.
frequency
hysteresis
setpoint
relay
t

t

t

t

t

t

t

t = reaction delay (0,1 or 1 sek.)
Supply voltage connected
Relay active
5%
+/- 0.02 Hz
+/- 0.04 Hz
10% of the adjusted bandwidth.
pin 6-7
open: 50 Hz, closed: 60 Hz
pin 5-7
open: 1 sec., closed: 0.1 sec.
1-pole: 8 A - 250 VAC
2-pole: 5 A - 250 VAC,
ohmic load

Comadan
Produktion a/s

5-11