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Figure 5‑1 DB-9 Connecter Pins (Profibus Connector)
Pin
Function
1
Empty
2
Empty
3
Data Line
5.3.10
Input and output connector
SC controllers contain a 24V DC Input and Output Connector. All eight inputs and eight outputs are isolated 24V
DC relays and contacts. The Alpha has an internal 24V DC power supply that can be used to provide the I/O
signals; an external 24V DC power supply may be used instead. The following are amperage ratings:
Internal 24V DC supply: Maximum = 1 ampere total
External 24V DC supply: Maximum = 1 ampere per output
The SC controller's Input circuits conform to the IEC 61131-2 standard for PLCs.
LIMITS per IEC 61131-2
Rated
Type
Voltage
Of
Limit
24 volt
Max
Min
The SC controller has a MIL-C-26482 Series I plug connector with cable clamp and solder cup pins.
NOTE
One I/O mating connector (P/N 21C104800) is included with each SC controller. Optional crimp style mating
connectors, crimp tools, round connector-to-terminal strip and pig-tail I/O cables are also available.
Part No.
21C104800
21C104802
21C104804
21E102202
21C202005
21C202010
21C202020
Pin
4
Repeater
5
Data Ref
6
Power Supply
State 0
V low (v)
I low (ma)
5
30
-3
ND
19-pin 24V I/O Port
Mating Connector - Solder pins
Mating Connector - Crimp pins
Mating Connector - Crimp pins, crimp tool
Breakout Box for plinth mounting
I/O Cable 5M
I/O Cable 10M
I/O Cable 20M
Function
Pin
7
8
9
Type 2 limits
Transition
V trans (v)
I trans (ma)
11
30
5
2
SC Series Controllers
Product overview
Function
Blank
Data Line Inverse
Empty
State 1
V high (v)
I high (ma)
30
30
11
6
Included
Standard
Optional
Optional
Optional
Optional
Optional
Optional
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