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General
AF-contactors are fitted with an electronic interface.
Code-11...-14, optimized for wide voltage range and stability
Operation is done, as with conventional contactors, by applying and removing supply votlage on
A1 and A2. Closing when 80% above the lower nominal voltage limit, opening when below 55% of
the lower nominal voltage limit, which is indicated in the functional diagram.
Code-42 and -43, optimized for short operation times
Operation is done, as with conventional contactors, by applying and removing supply voltage
on A1 and A2. Closing when 80% above the lower nominal voltage limit, opening when below
20% of the upper nominal voltage limit. Undefined function between the limits.
General for 4-pole
AF-contactors are fitted with an electronic interface. For a give coil, this interface allows the
contator to accept a very wide voltage range. Operation can be done as with convetional
contactors by applying and removing voltage on A1 and A2 (code 11-14). The function limits for
the supply voltage (closing at 85% and opening at 55%), which is indicated in the diagram by
high and low voltage.
Code-31...-34 built-in PLC interface
Operation is controlled by separate logic control signals from for instance a PLC. Use of logic
control requires a steady supply voltage on A1 and A2 within the rated voltage range, as described
for code-11...-14- The function of the logic control signal will no longer be guaranteed when the
supply voltage on A1 and A2 is removed.
The logic control signals are operated with 24V d.c. There are two control signals (ON and OFF_N)
and a common reference (COM). For the control signals, the function is guaranteed from 15V d.c.
(6mA) to 33V d.c. (20mA).
The contactor is closed by a control signal ON and opened by removal of control signal from
OFF_N. The functions are described in the diagram below. "1" means 24V d.c. between the control
signal and COM. "0" means no voltage between the control signal and COM. Minimum control
signal pulse length for opening and closing is 10ms. To connect the PLC interface use cable
dimension of max 1.5mm²
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ABB Electrification Sweden AB
SE-721 61 Västerås
Sweden
abb.com/lowvoltage
A1/A2
ON OFF_N COM
5
1
2
3
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Further information:
1
ON
0
1
OFF_N
0
High
Voltage
Low
Closed
Position
Open
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Revision
W
Revision date
2023-03-01
Document number
1SFC100008M0201
Functional diagram
Position
Contactor
closed
Contactor
open
Low
High
Normal range
Operational range
80% of lower voltage range level
55% of lower voltage range level
Supply voltage
+24 V
Start
X5
1
Stop
2
3
95
96
0V
Note: Emergency stop should disconnect A1 and A2
When used with switches the wiring can be done
according to diagram above.
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Supply
voltage
(A1/A2)
A1
A2
Contactor
ON
OFF_N
COM
Relay
2023
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