Module Features - GE IC670ALG620 Datasheet

Analog Input Module
RTD Input Module

Module Features

Channel Active
Each channel can be configured as either active or inactive.
If a channel is inactive, it is not scanned and a value of 0 is returned to the BIU.
If a channel is active, and the configured analog input data length is not long enough to
accommodate the data for a particular channel, the data for that channel is still processed,
since the response to a group command may be used to transmit that channel's data to the
BIU.
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 sends the appropriate diagnostic bit
in the discrete input table of the BIU. 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.
Input Selection to Include RTD Type
Each input channel can have a different RTD type, selectable from a list of many different
RTDs.
If the actual RTD resistance does not match the defined type, an adjustment factor can be
configured in tenths of ohms.
Selection
10 PT 10 Ohm Platinum (PT)
25 PT 25 Ohm Platinum IPTS-68
25.5 PT 392 25.5 Ohm Platinum,
α=.00392 at 0C Lab Std
100 PT 385 100 Ohm Platinum,
DIN43760, α=.00385
100 PT 3902 100 Ohm Platinum,
α=.003902
100 PT 392 100 Ohm Platinum,
α=.00392 IPTS-6 8
100 PT 3923 98.13 Ohm Platinum,
α=.003923
Comments Selection
100 PT 3916
1K PT 375
10 CU
9.035 CU 427
50 CU 427
100 CU 427
100 NI
Comments
100 Ohm Platinum, 100 NI 618
α=.003916
1 KOhm Platinum, 120 NI 672
α=.00375
10 Ohm Copper, at 25C, 604 NI/FE 518
IPTS-68
9.035 Ohm Copper, at IK NI/FE 527
25C, α=.00427
50 Ohm Copper, 500 OHM
α=.00427
100 Ohm Copper, 3000 OHM
α=.00427
100 Ohm Nickel, IPTS-68
GFK-1206D
Selection Comments
100 Ohm Nickel At 0C,
DIN43760, α=.00618
120 Ohm Nickel, at 0C,
α=.00672
604 Ohm Nickel/Iron, at
0C, α=.00518
1 KOhm Nickel/Iron, at 70F,
α=.00527
Select UNITS of 1/10 Ohms
Select UNITS of 1/10 Ohms
5
June 1997