Bender RCMA420-D-2 B74043002 Hoja De Datos

Function

10

The device function can be tested using the TEST button. The parameteriza-
tion of the device can be carried out via the LC display and the function keys 
integrated in the front plate and can be password-protected.

The CT connections are continuously monitored. In the event of a fault, the 
alarm relays K1 / K2 switch without delay, the alarm LEDs AL1 / AL2 / ON flash 
(Error Code E.01). After eliminating the fault, the alarm relays automatically re-
turn to their initial position, provided that the fault memory M is deactivated. 
With the fault memory activated, K1/K2 return to their initial position by press-
ing the reset button R. A second cascaded measuring current transformer will 
not be monitored.

With the display in standard mode, the currently measured response values 
I

Δn1

 and I

Δn2 

can be queried pressing the Up and Down keys ( < 1.5 s). Switch-

over to the Menu mode is not required. If you want to exit the fast response 
value query, press the enter key.

The device automatically carries out a self test after connecting to the system 
to be monitored and later every 24 hours. During the self test internal func-
tional faults will be detected and appear in form of an error code on the dis-
play. The alarm relays are not checked during this test.

After pressing the test button for > 1.5 s, the device carries out a self test. Dur-
ing this test, internal functional faults are detected and will be displayed in 
form of an error code. The alarm relays are not checked during this test.
While the test button T is pressed and held down, all device-related display el-
ements appear on the display.

If an internal functional fault occurs, all three LEDs flash. An error code will ap-
pear on the display (E01...E32). In such a case please contact the Bender Serv-