ABB IMASI13, Инструкция по эксплуатации

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WBPEEUI240766B0 B - 1
Appendix B
Replacing an IMASI03 Module
Introduction
There are two differences between the IMASI03 module and
the IMASI13 module, resolution/scan time and power con-
sumption. Once these two factors are taken into consideration,
the IMASI13 module can be used as a direct replacement for
the IMASI03 module.
The IMASI03 module resolution for the analog to digital con-
version for each independent channel can be set at 16, 18, 20,
22, and 24. For the IMASI13 module, the resolution for each
channel is 24 bits only.
Function Code 216 Modifications
Two changes are required to function code 216 when replacing
an IMASI03 module with an IMASI13 module.
1. Change specification S4 from x40 to x44 if the input chan-
nel is configured for a 1 to 5 VDC.
2. Change specification S11 to 24 bit A/D conversion resolu-
tion.
NOTE: If 16, 18, 20, or 22 bits resolution is already selected in function code
216, the IMASI13 module will automatically default to the 24 bit resolution. This
change is only necessary to insure the specifications accurately reflect the
module capabilities.
Refer to Table 1-4 for typical analog to digital conversion rates.
The rate specified is the conversion time for all channels.
Power Consumption Comparison
IMASI03 module:
•
300 mA at +5 VDC
•
130 mA at +15 VDC
•
35 mA at -15 VDC