Ropex RESISTRON RES-5010, Руководство по эксплуатации, Страница: 9 / 47

Basics of temperature control / measurement
RESM-5 Page 9
3.5 Possible faults and how to detect
them
Possible fault
Detected with
RESISTRON
controller
("400" or "500"
series) with alarm
output Additional
monitoring
current
transformer
MSW Additional,
redundant
RESISTRON
monitoring device
RESM-5
Heatsealing band break Yes No Yes
I
R
and U
R
measurement cables (break or short
circuit)
Yes No Yes
Contact between two heatsealing bands (wired
in series)
Possibly
1
Yes No
Heatsealing band partially short-circuited
Possibly
1
No No
Ground fault No Yes No
Zero point suppression due to incorrect
calibration Yes No Yes
Controller hardware defect No No Yes
Triac conductive or bypassed Yes No Yes
Current transformer defect No No Yes
Heatsealing band with too low a TCR
(
 section 3.6 "Residual risks" on page 10)
No No No
1. If the measured resistance of the heatsealing band changes >10%