Contact Function
1-6 OK for process
Contact closed: OK for Process
1)
– M version : speed ≥ nominal speed (set by ‘Relay At Speed’ parameter), (see chapter
“SETUP menu”), (see chapter “List of commands”).
– MT version : speed ≥ nominal speed (set by ‘Relay At Speed’ parameter), (see chapter
“SETUP menu”), (see chapter “List of commands”); and if the temperature is ≥ the setpoint
temperature - 3 °C. When ‘OK for Process’ = ‘At speed’ is set (OPT37), this signal behaves as
in the case of an M version.
2-7 Rotation
Contact closed: pump speed > 100 min
-1
3-8 Warning Contact open: presence of a warning
4-9 Fault Contact open: presence of a fault
1) If the parameter ‘OK for process up to Stand-by speed’ is set to 1 (see chapter ‘Command list’), the contact opens if the
Stand-by speed is selected and while the speed of the pump is greater than the Stand-by speed.
8.4 Command via the RS-232/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
Risk of electric shock in case of contact with a non-electrically insulated product
When powering off _mains switch to O_, certain components located between the mains connection
and the circuit breaker will still contain an electric charge (live). There is a risk of electric shock in
case of contact.
►
Make sure that the mains connection is always visible and accessible so that it can be unplugged
at any time.
►
Disconnect the power cable from the mains supply before working on the product.
8.4.1 Connections
The 9-pin D-Sub male connector marked RS-232/RS-485 is used to control and monitor the pump con-
nected to an external computer. It allows also the installation of several pumps in a network. The con-
nected computer allows the modification of the default serial link setting, according to the command list
(see chapter “Command list”).
Initial serial link configuration
Description Set Point
Serial link RS-232
Transmission speed 9600 bauds
Data word length 8 bits
Parity none (no parity)
Stop bit 1
Echo no
RS-232/RS-485 connector
Interfaces for control
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