GE VersaMax, Manual

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14-14 VersaMax® Modules, Power Supplies, and Carriers User's Manual – March 2003 GFK-1504K
14
IC200ALG630
Analog Input, 16 Bit Thermocouple, 7 Channels
Module Features
Channel Active
Each channel can be configured as either active or inactive. If a channel is inactive, the
filtering, scaling, calibration, and alarm checks are omitted for that channel, and a value of
0 is returned for the channel. The reference parameter for the analog input data returns the
byte length and is independent of the number of active channels.
Low Alarm Limit and High Alarm Limit
Each input channel can have a low alarm limit and a high alarm limit. If an input reaches
one of its limits, the module reports the actual value and reports an alarm fault in the I/O
Fault Table. Alarms do not stop the process or change the value of the input. Alarm limits
can be set anywhere over the dynamic range of the signal. The range for each is –32,768 to
+32,767. The high alarm limit must be greater than the low alarm limit. If alarm reporting
is not wanted, alarm limits can be set beyond the dynamic range of the signal so they will
never be activated.
Thermocouple Limits
The table below lists millivolt and temperature limits for applicable thermocouple types.
TC Type Low mV Limit High mV Limit Low Temperature
Limit ((C)
High
Temperature
Limit (C)
J –8.0960 57.9420 –210.00 1000.00
K –5.8910 54.8069 –200.00 1370.00
T –5.6030 20.2520 –200.00 390.00
S –0.1940 18.5040 –40.00 1750.00
R –0.1880 20.8780 –40.00 1750.00
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