13
6.7 Expansion modules
The pump can be fitted with an expansion module
enabling communication with external signals (signal
transmitters).
Two types of expansion modules are available:
• Relay module
• GENI module.
Twin-head pumps are always fitted with GENI mod-
ules.
Connection examples (GENI module) can be found
on pages 269 and 270.
6.8 Relay module
For mounting and operation, see separate installa-
tion and operating instructions for the relay module.
Functions:
• External start/stop
• Fault, ready and operating indication via signal re-
lay.
6.9 GENI module
For mounting and operation, see separate installa-
tion and operating instructions for the GENI module.
Functions:
• External start/stop
• External forced control
• External analog 0-10 V control
• Bus communication via GENIbus
• Control of twin-head pumps
• Fault, ready and operating indication via signal re-
lay.
6.9.1 Control of twin-head pumps
Twin-head pumps are supplied fitted with a GENI
module on each control box. The modules are con-
nected via a cable.
Fig. 8 Twin-head pump with GENI modules
For connection of the communication cable between
the GENI modules, see pages 269 and 270.
The communication between the control box and the
GENI module is wireless.
Twin-head pumps are factory-set to the control mode
AUTO
ADAPT and the operating mode "alternating op-
eration", which is described below.
Operating modes:
• Alternating operation
Pump operation alternates every 24 hours. If the
duty pump stops due to a fault, the other pump will
start.
• Standby operation
One pump is operating continuously. In order to
prevent seizing-up, the other pump will start at a
fixed frequency and run for a short period. If the
duty pump stops due to a fault, the other pump will
start.
TM03 0642 0405
Right pump headLeft pump head
Flow direction
Cable
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