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126
Temperature Measured by Sensor in Error
Possible cause
Remedy
Reference
Sensor polarity or wiring is wrong
Wire correctly
Sec. 3-5
Sensor type is wrong
Use correct sensor
Sec. 1-3-1
Sensor type switch setting is wrong
Set DIP switch correctly
Sec. 2-1-5
A sensor is connected which cannot be used
with the E5ZD.
Use sensors that are compatible with the E5ZD, and set
the DIP switch.
Sec. 1-4-2
Thermocouple is used without compensation
lead
Connect compensation lead
Sec. 1-4,
and Page
17 Terminal
Blocks
Compensation lead doesn’t match the thermo-
couple
Use correct compensation lead
Sec. 1-4,
and Page
17 Terminal
Blocks
Something other than the thermocouple or
compensation lead is connecting the thermo-
couple and terminal block.
Use proper thermocouple connection
Sec. 1-4,
and Page
17 Terminal
Blocks
Terminal block screws loose
Tighten screws
Page 17
Terminal
Blocks
The shorting pin is missing from between pins
1 and 2 of CN3
Short pins 1 and 2 together when using thermocouple
Page 11
Connectors
Sensor wiring is broken or shorted
Replace sensor
Sec. 3-5
The special terminal blocks are not being used
for E5ZD-8H
j
KJM-E thermocouple inputs.
Use an E54-TR011 terminal block.
Sec. 2-3-1
The special terminal blocks are not being used
for E5ZD-8H
j
PM-E platinum resistance ther-
mometer inputs.
E54-TR011 terminal blocks cannot be used. Use
through-type terminal blocks instead.
Sec. 2-3-2
A sensor terminal has been left unconnected
Connect dummy inputs to all unused sensor terminals
Sec. 2-1-4
Noise or inductance is affecting signal
Separate the sensor wiring from load and/or power sup-
ply lines
Sec. 1-4-2,
3-2-3
Terminal block temperature varies or is too
high
Install a block that will not get too hot or be subject to
excessive temperature variations
Sec. 1-4-2
Measured temperature is out-of-range
Use sensor of appropriate range or ensure that the tem-
perature is maintained to within the chosen range
Sec. 1-3-1
Input shift is wrong
Reset input shift value
Sec. 4-2-19
Celsius-Fahrenheit designation is wrong
Set switch correctly
Sec. 2-3-10
Setting values are incorrect, e.g., decimal
points are wrong, etc.
Input correct values
Section 4
Host computer program is wrong
Debug program
Section 4
Troubleshooting Lists
Section 6-1
Summary of Contents for E5ZD
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Page 3: ...E5ZD Multipoint Temperature Controller Operation Manual Revised November 1996 ...
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