Sel 751A, Instruction Manual

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2.8
SEL-751A Relay Instruction Manual Date Code 20100129
Installation
I/O Configuration
I/O Input Card
(3 DI/4 DO/1 AO)
Supported in one nonbase unit slot (Slot C , D , or E ), this card has three digital
inputs, four digital outputs, and one analog output. Table 2.9 shows the
terminal allocation.
RTD Card (10 RTD)
Supported in Slot
D
only, this card has 10 three-wire RTD inputs. Table 2.10
shows the terminal allocation.
Table 2.9 I/O (3 DI/4 DO/1 AO) Card Terminal Allocation
Terminal Number Software Reference, Description
a
a
x = 3, 4, or 5 (e.g., OUT401, OUT402, etc., if the card was installed in Slot D).
01, 02 OUT x 01, driven by OUT x 01 SEL
OGIC
equation
03, 04 OUT x 02, driven by OUT x 02 SEL
OGIC
equation
05, 06
OUT x 03, driven by OUT x 03 SEL
OGIC
equation
07, 08 OUT x 04, driven by OUT x 04 SEL
OGIC
equation
09, 10 AO x 01, Analog Output Number 1
11, 12 IN x 01, Drives IN x 01 element
13, 14
IN x 02, Drives IN x 02 element
15, 16
IN x 03, Drives IN x 03 element
Table 2.10 RTD (10 RTD) Card Terminal Allocation
Terminal Number Description
01 RTD01 (+)
02 RTD01 Return (-)
03 RTD01 Comp/Shield
04
RTD02 (+)
05 RTD02 Return (-)
06 RTD02 Comp/Shield
07
RTD03 (+)
08
RTD03 Return (-)
09 RTD03 Comp/Shield
• •
•
•
•
•
28 RTD10 (+)
29 RTD10 Return (-)
30 RTD10 Comp/Shield