Tabla De Contenido; Applications - Grundfos CU 401 Instrucciones De Instalación Y Operación

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CONTENTS
1. Applications
2. CU 401 control unit
3. Mounting
4. Indicator lights
5. Electrical data
5.1 Inputs
5.2 Outputs
5.3 Terminals
5.4 Conductors
6. Technical data
7. Module bus
7.1 UPS battery back-up
7.2 GENIbus (RS-485)
7.3 IR communication
7.4 Operator display (OD 401)
7.5 Communication to PC (RS-232)
8. Replacement of internal battery
9. Terminator
10. Replacement of CU 401
11. Replacement of modem
12. Network connection
13. Block diagram
14. Example of wiring diagram
15. Maintenance
16. Dimensions
17. Disposal
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local regula-
tions and accepted codes of good prac-
tice.
All wires to units outside the control panel
must be of the type H05VV-F according to
CENELEC HD21 (to avoid injury from
touching wires).

1. Applications

The CU 401 control unit is designed for the monitor-
ing and control of a number of Grundfos pumps.
Optimum pump operation is thereby ensured.
The CU 401 unit is the "brain" of a main control sys-
tem.
The CU 401 unit can be used alone or together with
various modules which can be connected as
required.
The number of pumps that can be monitored and
controlled depends on the modules in the system.
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