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Instruction Manual MRF102_7.docx
Page 1
MRF102
2- Channels Electronic Circuit Breaker
Instruction Manual
Thank you for having chosen one of our products for your work.
We are certain that it will give the utmost satisfaction and be a notable
help on your job and application.
1
Product Description
The MRF102 2-channel electronic circuit breaker with Din Rail and Wall
mounting is designed for current distribution and protection of 12V or
24V load circuits.
2
Safety and warning notes
WARNING
– Explosion Hazard Do not disconnect
Equipment unless power has been switched off or the area
is known to be non-hazardous.
WARNING
– Explosion Hazard. Substitution of components
may impair suitability for class I, Division 2.
WARNING
– Switch off the system before connecting the module. Never
work on the machine when it is live. The device must be installed in
according to EN61010 or EN62368-1. The device must have a suitable
isolating facility outside the power supply unit, via which can be switched
to idle. Danger of fatal Injury!
WARNING
– The device is equipped whit an internal fuse. If the internal
fuse blows Up (fails opens), it is most probable that there is a fault in the
device. If this failure occurs, the device must be returned to the factory.
3
How to Install
Mounting
Fig. 1
– Drawing of the MRF102
Din Rail or Panel Mounting
Fig. 1 shows a dimensional drawing of the MRF102. It is possible to
mount the device on Din rail or in panel and fix it by 4 screws 2.9x8-16.
There is no limit for the Panel thickness.
How to Supply MRF102
The MRF102 is supplied directly from the power source which provide
power to the load. The device it is protected by internal physic fuse, also
in worst case situations. The input rating is 8
– 35Vdc.
Device Connection (Fig.2)
The following cable cross-sections may be used:
Solid
(mm2)
Stranded
(mm2)
AWG
Torque
(Nm)
Stripping Length
In:
0.2
–2.5
0.2
–2.5
24
– 14
0.5
–0.6
7 mm
Out:
0.2
–2.5
0.2
–2.5
24
–14
0.5
–0.6
7 mm
Signal:
AMP Modu II
Connection by the screw, type 2.5 mm2. Wiring terminal shall be
marked to indicate the proper connection for the power supply. Use
copper cables only, for supply connections, use wires suitable for at
least 75°C.
Fig. 2
– Connections to MRF102
Connection terminal and wiring
Reference Description
1
+ Input Power
2
- Input Signal
3
Push Botton: ON / OFF Channel 1 and 2 / Config.Mode
4
LED Green, Orange, Red: Channel controls / Config.Mode
5
LED Green, Orange, Red: Channel controls / Config.Mode
6
Output 1
7
Output 2
8
Output Fail CN1 and CN2 or ADELBus connection
4
Drive a Channel
Turn On Channel
On the first power up, all channel are OFF.
To enabling channel 1(LED Blink Red for short time) push the set button
for short time: one time; < 1 sec.
To enabling channel 2(LED Blink Red for short time) push the set button
for short time: two time; < 1 sec.
Each channel could be enabled after a Switch off for Overload or Short
circuit, (LED Red ON). When the LED Red flash for 3 time, the devise
it’s
ready to turn ON the channel. If the channel is ON, the device maintains
in memory the state also without the power; this function it is not enabled
if the device is in configuration mode.
Turn Off Channel
When the channel 1 is ON (LED Blink Green or Orange for short time)
push button for short time: one time and the channel turn OFF; < 1 sec.
When the channel 2 is ON (LED Blink Green or Orange for short time)
push button for short time: Two time and the channel turn OFF; < 1 sec.
If the channel is OFF, the device maintains in memory the state also
without the power.
5
LED indication
•
Led RED ON: the channel is in protection due to Overtemperature,
Overcurrent,
Over/Under
voltage
(<8.5V
or
>32.5V).
The device could be in this situation for some sec.
In this condition it is not possible turn ON the device.
•
Led RED flashes three times for short time: the channel is OFF after
switch
protection,
but
is
ready
to
be
turned
ON.
Push the set button to turn ON the device.
•
Led RED flashes one for short time, the channel is OFF but ready
for turn ON. Push the set button to turn ON the device.
•
Led GREEN blinks for short time: the channel is ON and the current
through the channel is <80% of the tipping point switch.
•
Led ORANGE blinks for short time: the channel is ON and the
current through the channel is >80% of the tipping point switch.
•
Config. Mode: One Led OFF and the second Led ORANGE blinks,
in this condition it is enabled the procedure:
•
Verify the trip current set for each channel
•
Configure the trip current for each channel
7
Out 1
6
Out 2
1
Input +
2
Input -
4
LED CN1
5
LED CN2
3
ON / OFF out 1: Tich -
ON / OFF out 2: Tich
– Tich -
PROG: Press 2 sec. -
8
Fail _ ADELBus
