Cu 401 Control Unit - Grundfos CU 401 Instrucciones De Instalación Y Operación

2. CU 401 control unit

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2
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Pos. Description
1 and 4 Analog inputs and supply for analog sensor
2 GENIbus
3 Pulse counter input
5 RS-232 input
IR communication via Grundfos remote control
6
R100
7 Connection for operator display (OD 401)
8 Connection for UPS battery back-up (PU 102)
9 Connection for power supply (PU 101)
10 and 14 Digital inputs
11 and 12 Relay outputs
13 Module bus
15 Modem*
16 CompactFlash card for application programs
Connection for external communication bus
17
(RS-232, RS-485, etc.)
18 Battery (internal back-up) for clock
* Not standard, but can be ordered from Grundfos.
All manuals and user guides at all-guides.com
7 8 9
14
15
13
12
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Functions
• GENIbus communication (RS-485).
• 2 analog inputs which can be connected
to sensors with current (4-20 mA) or volt-
age (0-10 V).
• 6 digital inputs (24 V).
• 24 V output for sensor supply.
• 10 V output for potentiometer.
• 2 relay outputs (changeover relay) for
alarms for the control of external equip-
ment (400 VAC/2 A) like for instance
revolving warning light or horn.
• Pulse counter input (max. 10 kHz).
• Connection of operator display (OD 401).
• Module bus connection.
• Connection of UPS battery back-up
(optional).
• Communication buses:
- RS-232*
- Profibus-DP slave*
- DeviceNet.*
• Ethernet connection.*
• Modem connection.*
16 17
18
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