Chentronics iScan3 Series - Thermal Protection

MNL-ISCAN3, REVB INSTALLATION & OPERATION MANUAL Page 8 of 25
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Thermal Protection
The iScan3 Flame Scanner has redundant safety features for exposure above the maximum temperature rating. The modes of
operation are described below:
Mode
Internal Temperature (T
INT
)
4-20 Output Setting
Indicator Light Setting
Relay Operation
Normal
T
INT
≤ 95°C
Normal (4-20 mA)
Normal
Normal
Warning
95°C < T
INT
< 100°C
3mA steady
Alternate left half yellow 0.5s
/ right half yellow 0.5s
Normal
Fault
100°C < T
INT
≤ 105°C
2mA steady
Blink yellow 0.5s on 0.5s off
Relays Open and will not
Close
Disable
T
INT
> 105°C
1mA steady
Yellow Solid
Relays Permanently Open
and will not Close