INSTRUCTION
INSTRUCTION
ERP
NOV 98
Start-up and fault finding
N.B.
Be careful when working in the ERP. All internal components
including the cooling flange are at line voltage potential.
Never leave the unit under power without the front cover on.
1. Check that all wiring is correct and that the sensor selector
switches are in the correct position.
2. Measure the resistance between terminals 3 and 4:
At 230V: 14.4
Ω
<R<230
Ω
. At 400V: 25
Ω
<R<400
Ω
.
3. Connect supply voltage and turn the setpoint knob to the
maximum value. The LED in the side of the ERP should be
continuously on or pulse on/off with longer and longer ontime
and eventually be continuously on.Turn the setpoint to the
minimum value. The LED in the side of the ERPshould be
continuously off or pulse on/off with longer and longer offtime
and eventually be continuously off. At a certain position (within
the proportional band) the LED will pulse On-Off as the ERP
pulses current to the heater The pulse cycle period is approx. 60
seconds. Check with a clamp-on ammeter that current is flowing
to the heater.
Something wrong?
4. Remove wiring to external sensor. The sensor resistance varies
between 10k
Ω
and 15k
Ω
between the upper and lower ends of the
sensor temperature range. The resistance changes by 167
Ω
/°C.
5. Set both the sensor selector switches in the downwards position
but leave the sensor inputs G-G open. Switch the voltage on.
ERP should give full uninterrupted power and the LED should be
lit. Check with a clamp-on ammeter that current is flowing to the
heater.
If the LED is not lit and no current is flowing: Check that you have
power on terminals 1 and 2 and recheck the positions of the
sensor selector switches. If OK the ERP is probably faulty.
If the LED lights up but no current is flowing: Recheck the heater
resistance as above. If OK the ERP is probably faulty.
Tel: +46 31-336 86 00
Fax: +46 31-26 28 60
[email protected]
www.frico.se
Frico AB
Box 102
SE-433 22 Partille
Sweden
EMC emissions & immunity standards:
This product conforms with the requirements of
European EMC standards CENELEC EN 50081-1 and EN 50082-
1 and carries the CE mark.
LVD
This product conforms with the requirements of
European LVD standards IEC 669-1 and IEC 669-2-1.
6. Shut off power and short-circuit the sensor input G-G but leave
the switches in the downwards position. Switch on power
again.
ERP should not give out any power at all and the LED should
be extinguished. Check with a clamp-on ammeter that no
current is flowing to the heater.
If the LED is extinguished but current is flowing to the heater
the ERP is faulty.
If the LED is lit, recheck the shorting of terminals G-G. If OK
the ERP is faulty.
7. If everything OK this far the ERP and the sensor/setpoint are
OK.
Shut off power, remove the wire strap from G-G and reconnect
external sensor/setpoint if any. Set the sensor selector
switches in their correct positions according to the appropriate
wiring diagram for the installation at hand. Replace front cover
and setpoint knob. Connect power.
Code
Connection timer
ERPU
Frame for connection timer
ERPR
Slave controlled
electric heating regulator
ERPS
Floor/duct sensor
ERPGG
Room sensor
ERPRG
Accessoires
153
93
40
