Wire the 1755-hsc counter modules – Rockwell Automation 1755-OF8 GuardPLC Controller Systems User Manual
Page 68

68
Publication 1753-UM001C-EN-P - March 2010
Chapter 5 Wire the GuardPLC 2000 Controller and I/O
Wire the 1755-HSC Counter
Modules
This module contains 2 high-speed counters and 4 digital outputs.
Although the 4 digital outputs are located on the 1755-HSC module,
they cannot be driven by counter presets. The 4 digital outputs are
driven by software, just as on the 1755-IB24XOB16 module.
The nominal current per output is limited to
≤
0.5 A. Currents > 0.5 A
are regarded as overload. The overload is limited to
≤
11 A per
output, or
≤
2 A if all four outputs are overloaded at the same time.
With an overload of 2 A, the output voltage drops to 18V.
All counter common reference poles, C-, share the same path. All
digital output common reference poles, L-, share the same path, but
are electrically isolated from the C- pins.
Terminal Number
Designation
Function
1
C-
Common reference pole
2
A1
Signal input for counter 1
3
B1
Counting direction input for counter 1
4
Z1
Reset input for counter 1
5
C1
no function
6
C-
Common reference pole
7
C-
Common reference pole
8
C-
Common reference pole
9
C-
Common reference pole
10
C-
Common reference pole
11
A2
Signal input for counter 2
12
B2
Counting direction input for counter 2
13
Z2
Reset input for counter 2
14
C2
no function
15
C-
Common reference pole
16
C-
Common reference pole
17
C-
Common reference pole
18
C-
Common reference pole
19
L-
Reference pole for digital outputs
20
1
Digital output 1
21
2
Digital output 2
22
3
Digital output 3
23
4
Digital output 4
24
L-
Reference pole for digital outputs
25
L-
Reference pole for digital outputs
26
L-
Reference pole for digital outputs
27
L-
Reference pole for digital outputs
RUN ERR
1755-
HSC
1
2
3
4
5
6
7
8
9
A1
B1
Z1
C1
C-
C-
C-
C-
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
L-
1
2
3
4
L-
L-
L-
L-
C-
A2
B2
Z2
C2
C-
C-
C-
C-
C-
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