Yokogawa RotaMASS 3-Series - Manual (Page 186)

8. SElF-dIAgNOSTIC ANd TrOUBlESHOOTINg
8-10 IM 01R04B04-00E-E 8th edition March 01, 2011 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
8.7.7 disagreement of indication with actual temperature
yes
Are temperature unit,
URV, LRV and lowcut set
correctly ?
Set correct temperature
parameters.
PT 100 fault.
Simulate the correct
temp. by a fixed temp,
value or connect an
external PT100.
For Remote type: Is
remote cable connected
according chapter 9 and
4.8.4 ?
Connect remote cable
according chapter 9
and 4.8.4
Compact type: disconnect first the converter housing
Disconnect the temperature sensor cables 7,8,9 from TP1, TP2, TP3 in
detector RCCS3x terminal box.
Measure the resistances of detector temperature sensor terminals TP1,
TP2, TP3.
Resistance between TP1 + TP2 : 50 …200
depending on medium
temperature
Resistance between TP1 + TP3 : 50 …200
depending on medium
temperature
Resistance between TP2 + TP3 : <10
Replace remote cable.
Is fixed temperature
selected (Tempy fix val sel
= Enable ) ?
Set Temp fix val sel =
Inhibit.
Resistance values are as
stored ?
For remote type: Check
remote cable lines 7, 8, 9.
Cable OK ?
yes
n o
no
no
no
no
yes
yes
yes
yes
F87.EPS