Omron E5ZE Operation Manual page 77

Hardware Test
Current Transformer (CT) Input Test
The CT input test can be performed when a model with heater burnout detection and SSR failure detection is being
used.
The carry current and leakage current of a control point that is measured using CT input are displayed as bar
graphs by using the E5ZE indicators.
The carry current is the CT input measurement when the control output is turned ON. The leakage current is the CT
input measurement when the control output is turned OFF.
If the leakage current bar graph is displayed, and the current bar graph indicates a value very different from the
heater's rated value, check the selector, switch settings and the wiring.
Procedure
1, 2, 3...
UNIT Selector
76
3. Check if the output is ON, the MB0 indicator is lit, and the indicator corre-
sponding to the output is lit. (The control output indicator is lit even if the
E5ZE is a Current Output Model.)
4. To change the output to be turned ON, set with the UNIT or INPUT selector
after setting pins 3 and 8 of the FUNCTION switch to OFF.
1. While in hardware test mode, set the control point to be measured and the
type of current with the UNIT selector.
Set Control point
value to be
measured
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 0
9 1
A 2
B 3
C 4
D 5
E 6
F 7
2. Set pins 5 and 8 of the FUNCTION switch to ON.
3. Check that the MB2 indicator is lit.
The CT input measurement value of the selected control point will be dis-
played as a bar graph using the indicators, as follows:
45 A min.
40 A min.
35 A min.
The second row of indicators will
30 A min.
be lit for the bar graph display.
25 A min.
20 A min.
15 A min.
10 A min.
5 A min. Lit
Flashing
1 A min.
Carry current
measurement
Leakage current
measurement
Appendix E