Mcb 114 Sensor Input Module; Genibus - Grundfos CUE Series Product Manual

Functions

MCB 114 sensor input module

The MCB 114 sensor input module offers three addi-
tional analog inputs for the CUE:
• one analog 4-20 mA input for an additional sensor
• two analog Pt100/Pt1000 inputs for temperature
sensors.
Sensor 2
The analog 4-20 mA input is used for these functions:
• Monitoring of measured value of sensor 2 (default
setting).
• Measured value of sensor 2 used for control pur-
pose. This makes differential pressure control pos-
sible by using measurements from sensor 1 and
sensor 2 (setting by means of PC Tool).
Temperature sensors 1 and 2
The analog Pt100/Pt1000 inputs are used for monitor-
ing of these temperatures:
• drive-end motor bearing
• non drive-end motor bearing
• other liquid 1
• other liquid 2
• motor windings
• pumped liquid
• ambient temperature.
Displays
MCB 114 input
Sensor 2
Temperature sensor 1
Temperature sensor 2
Further information
See MCB 114 sensor input module, page 53.
See also the CUE and MCB 114 installation and oper-
ating instructions.

GENIbus

The CUE supports serial communication via the RS-
485 connection. The communication enables connec-
tion to a building management system or another exter-
nal control system.
Operating parameters, such as setpoint and operating
mode, can be remote-set via the bus signal. At the
same time, the pump can provide status information
about important parameters, such as actual value of
control parameter, input power and fault indications.
Display Menu Number
Reading Setting
(2.5) (3.16)
(2.12) (3.21)
(2.13) (3.22)
Protocol
Using GENIbus interface, the protocol selection of the
RS-485 port must be selected to GENIbus, and the
communication must be set according to the Grundfos
GENIbus standard.
Pump number
Using GENIbus interface, a pump number between 1
and 199 must be allocated to each pump via the control
panel.
Local/remote operating mode
In local operating mode, the unit is controlled from local
sources, i.e. control panel and digital input.
In remote operating mode, the unit is controlled via
GENIbus. Change to remote operating mode is done
via the GENIbus.
Priority of settings
The CUE can be controlled in various ways at the same
time. If two or more operating modes are active at the
same time, the operating mode with the highest priority
will be in force.
Local operating mode
Priority CUE menu
1 Stop
2 Max.
3
4
5 Min.
6 Normal
Example: If an external signal has activated the oper-
ating mode Max., it will only be possible to stop the
pump.
Remote operating mode
Priority CUE menu External signal
1 Stop
2 Max.
3 Stop
4
5
6
Example: If the bus signal has activated the operating
mode Max., it will only be possible to stop the pump.
Grundfos CUE
External signal
Stop
Max.
Min.
Normal
Bus signal
Stop
Max.
Min.
Normal
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