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Danaher Motion
Appendix A - Operation Details
A.1
Introduction
This appendix describes in detail the operation of many of the sub-systems found
within the MMC Control and Option Modules.
A.2
DC Inputs
Each input is guaranteed "on" at 14 to 30 VDC and guaranteed "off" at 0 to 5 VDC
(polarity doesn't matter). Its on/off state is converted to a corresponding logic 1 or 0.
This logic state is transmitted through the system bus to the application program,
which uses these logic states to control program flow. The logic side of the input is
optically isolated from the field side.
The shaded blocks in
show the maximum and minimum V/I of the inputs in this module. The voltage/current
curve in this graph shows that the input module is well within the IEC Type 1 limits.
Figure A-1: Input Characteristics Compared to IEC Standards
U in Volts
UH
30
MAX
25
U
24
NOM
20
UH
15
MIN
(UT
)
MAX
10
UL
5
MAX
(UT
)
MIN
0
-5
.5
IT
MIN
Standalone MMC Hardware Manual
version 15.1
Figure A-1
MIN MAX
4
2
6
IH
MIN
INPUT CURRENT
below show the limits specified by the IEC. The lines
TRANSITION REGION
"OFF" REGION
10
8
Operation Details
"ON" REGION
I in
mAMPS
12
14
15
I
MAX
173
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