Download Operating instructions UPT-606 - About

Controller functions
9.11
Fault areas and causes
5
1
2
6
2
9
3
Temperature
controller
4
8
UR
1
IR
8
7
123 45
HARDWARE
9
I2
8
U2
7
The table below explains the possible fault causes.
Fault area
c
Explanation
Possible causes
Load circuit interrupted after UR
pickoff point
- Wire break, heating element break
- Contact to heating element is defective
PEX-W2 current transformer
signal interrupted
- IR measuring wires from current transformer interrupted
Primary circuit interrupted
- Wire break, triac in controller defective
- Primary winding of impulse transformer interrupted
Secondary circuit interrupted
before UR-pickoff point
- Wire break
- Secondary winding of impulse transformer interrupted
e
UR signal missing
- Measuring wires interrupted
f
Partial short-circuit (delta R)
- heating element partially bypassed by conducting part
(clamp, opposite heating bar etc.)
g
Parallel circuit interrupted
- Wire break, heating element break
- Contacting to heating element defective
h
Total short-circuit
- heating element installed incorrectly, insulation at
heating bar ends missing or incorrectly installed
- Conducting part bypasses heating element completely
i
UR signal incorrect
- DIP switches 1 - 3 configured incorrectly (U2 range)
IR signal incorrect
- DIP switches 4 + 5 configured incorrectly (I2 range)
Turns through PEX-W2 current
transformer incorrect
- Check number of turns (two or more turns required for
currents < 30A)
Internal controller fault
- Hardware fault (replace controller)
d
j
k
UPT-606
Page 29