Ropex RESISTRON RES-5009, User Manual, Page: 54 / 98

Device functions
Page 54 RES-5009 Version 1
9.16 Error ranges and causes
Explanations of the possible error causes can be taken from the following table.
Error
range
Explanations Possible causes

Interruption of the load circuit after
the U
R
pickup point
- Wire break, heating element break
- Contacting at the heating element defective
Interruption of the signal from the
transformer - I
R
measurement line from the transformer interrupted

Interruption of the primary circuit
- Line break, Triac defective in the controller
- Primary coil of the impulse transformer interrupted
- Kb fuse open
Interruption of the secondary cir-
cuit in front of the U
R
pickup point
- Wire break
- Secondary coil of the impulse transformer interrupted

U
R
signal missing - Measurement line interrupted

Partial short circuit (Delta R)
- Heating element is partially bridged through a conducting
part (downholder, counter bar, etc.)

Interruption of the parallel circuit
- Wire break, heating element break
- Contacting at the heating element defective

Complete short circuit
- Heating element incorrectly installed, insulation at the head
of the rail missing or incorrectly installed
- Conducting part bridges heating element completely

U
R
signal incorrect - U
2
outside of the permitted range of 0.4…120VAC

I
R
signal incorrect - I
2
outside of the permitted range of 30…500 A
Coils through transformer incor-
rect - Check number of coils (for current < 30 A, two or more
coils are required)
5
3
6
8
1
4
1 2 2 9
7
8
UR
IR
Temperature
controller
HARDWARE
9