Omron SYSMAC C200H-TC Operation Manual page 77

Heater Burnout Detection
Sample SV Calculations
Example 1
Example 2
Specifications
Heater Burnout Detection Characteristics
Heater burnout detection setting range
Current difference required for heater
burnout detection
Heater current monitor range
Monitor accuracy of input current
Min. detectable ON time
Note 1. If the heater burnout detection setting value is set to 0.0 or 5.0 A, no heater burnout detection is possible.
The alarm signal is turned OFF if the heater burnout detection setting value is set to 0.0 A and turned ON
if it is set to 5.0 A.
2. If the control output is turned ON for less than 200 ms, no heater burnout detection or heater current
measurement is possible.
E54-CT1/CT3 Current Transformer
Max. continuous heater current
Dielectric strength
Vibration resistance
Weight
Accessories (E54-CT3 only)
70
Downloaded from Elcodis.com electronic components distributor
The total heater current during normal operation should not exceed 5 A. If the
current exceeds 5.5 A, a CT Input Overflow error occurs and ffff is displayed
if the heater current monitor is selected.
Measure each current with the heater current monitor. In some cases the calcu-
lated current may differ from the actual measured value.
Using one 200 VAC, 800 W heater
800
Normal current = = 4 A
200
Burnout current = 0 A
4 + 0
SV = = 2 A ( 4.9 A)
2
Using three 100 VAC, 100 W heaters
100
Normal current = x 3 = 3 A
100
Burnout current with one heater burned out =
3 + 2
SV = = 2.5 A ( 4.9 A)
2
Difference between normal and burnout current = 3 – 2 = 1 A ( 0.5 A)
0.1 to 4.9 A (in units of 0.1 A) (see note 1)
0.5 A min. (normal time – burnout time)
0.0 to 5.5 A
5% of FS 1 digit max.
200 ms (see note 2)
50 A
1,000 VAC (1 min)
50 Hz (approx. 10G)
E54-CT1: approx. 11.5 g; E54-CT3: approx. 50 g
Contact: 2; Plug: 2
Appendix C
100
x 2 = 2 A
100