NOTICE
S2 output wiring precautions
► Do not connect a relay between contacts 5 and 6 of the S2 output: the relay coil could create an
induced current which may damage the frequency converter.
► Do not apply a current greater than
35 mA
to the output: a greater current would damage the
frequency converter.
S2 output wiring procedure
► Use the open collector S2 output according to the wiring below:
Vcc
5
6
C
I
R
Vout
Vcc:
direct voltage delivered by the installation (between 7 and
30 VDC)
R:
resistance value (customer provides resistance)
Vout:
output voltage
Wiring and supply is the responsibility of the customer.
Tbl. 2:
S2 output wiring procedure: example
The
Vcc
and
R
values must be calculated so that the current
I
is less than 35 mA. When the setpoint
speed is reached, the transistor becomes conductive ‘on-state’ and
Vout = 0 V
. When the setpoint
speed is not reached, the transistor is ‘blocked’ (‘off-state’) and
Vout = Vcc
. This assembly does not
pass power, add an amplifier stage to control the power. The S2 output can be used as a relay (dry
contact) using the socket interface accessory (see chapter “Accessories”).
5.6 Wiring the RS-485 serial link
NOTICE
Risk of electromagnetic disturbance
Voltages and currents can induce a multitude of electromagnetic fields and interference signals. In-
stallations that do not comply with the EMC regulations can interfere with other equipment and the
environment in general.
► Use shielded cables and connections for the interfaces in interference-prone environments.
WARNING
Danger to life from electric shock in the event of a fault
In the event of a fault, devices connected to the mains may be live. There is a danger to life from
electric shock when making contact with live components.
► Always keep the mains connection freely accessible so you can disconnect it at any time.
5.6.1 Connections
The male D-Sub 15-pin connector is used to control and monitor the pump using a computer. It also
allows the installation of several pumps in a network.
The default serial link setting can be modified from the connected computer: command list in the next
chapter.
Description
Set Point
Serial link
RS-485
Transmission speed
9600 bauds
Data word length
8 bits
Parity
none (no parity)
Installation
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Summary of Contents for ACP 28 CP
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