Grundfos CUE, Installation And Operating Instructions Manual

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Related information
4.4.2 Reduction in connection with long motor cables
12.3.4 Non-UL fuses and conductor cross-sections to mains and motor, for installations outside North America
12.4 Electrical data
Mains supply (L1, L2, L3)
Supply voltage 200-240 V ± 10 %
Supply voltage 380-500 V ± 10 %
Supply voltage 525-600 V ± 10 %
Supply voltage 525-690 V ± 10 %
Supply frequency 50/60 Hz
Maximum temporary imbalance
between phases
3 % of rated value
Leakage current to protective
earth
> 3.5 mA
Number of cut-ins, enclosure A Max. 2 times/min
Number of cut-ins, enclosures B
and C
Max. 1 time/min
Do not use the power supply for switching CUE on and
off.
Motor output (U, V, W)
Output voltage
0-100 %
1
Output frequency
0-590 Hz
2
Switching on output Not recommended
1 Output voltage in percentage of supply voltage.
2 Depending on the pump family selected.
RS-485 GENIbus connection
Terminal number 68 (A), 69 (B), 61 GND (Y)
The RS-485 circuit is functionally separated from other central
circuits and galvanically separated from the supply voltage (PELV).
Digital inputs
Terminal number 18, 19, 32, 33
Voltage level 0-24 VDC
Voltage level, open contact > 19 VDC
Voltage level, closed contact < 14 VDC
Maximum voltage on input 28 VDC
Input resistance, R
i
Approx. 4 kΩ
All digital inputs are galvanically separated from the supply voltage
(PELV) and other high-voltage terminals.
Signal relays
Relay 01, terminal number 1 (C), 2 (NO), 3 (NC)
Relay 02, terminal number 4 (C), 5 (NO), 6 (NC)
Maximum terminal load (AC-1) 1 240 VAC, 2 A
Maximum terminal load
(AC-15)
1
240 VAC, 0.2 A
Maximum terminal load (DC-1)
1 50 VDC, 1 A
Minimum terminal load
24 VDC, 10 mA
24 VAC, 20 mA
1
IEC 60947, parts 4 and 5.
C Common
NO Normally open
NC Normally closed
The relay contacts are galvanically separated from other circuits by
reinforced insulation (PELV).
Analog inputs
Analog input 1, terminal number 53
Voltage signal
Voltage range
Input resistance, R
i
Maximum voltage
A53 = "U"
1
0-10 V
Approx. 10 kΩ
± 20 V
Current signal
Current range
Input resistance, R
i
Maximum current
A53 = "I"
0-20, 4-20 mA
Approx. 200 Ω
30 mA
Maximum fault 0.5 % of full scale
1 The factory setting is voltage signal "U".
Analog input 2, terminal number 54
Current signal
A54 = "I"
1
Current range 0-20, 4-20 mA
Input resistance, R
i
Approx. 200 Ω
Maximum current 30 mA
Maximum fault 0.5 % of full scale
All analog inputs are galvanically separated from the supply voltage
(PELV) and other high-voltage terminals.
Analog output
Analog output 1, terminal
number
42
Current range 0-20 mA
Maximum load to frame 500 Ω
Maximum fault 0.8 % of full scale
The analog output is galvanically separated from the supply voltage
(PELV) and other high-voltage terminals.
MCB 114 sensor input module
Analog input 3, terminal number 2
Current range 0/4-20 mA
Input resistance < 200 Ω
Analog inputs 4 and 5, terminal
number
4, 5 and 7, 8
Signal type, 2- or 3-wire Pt100/Pt1000
Related information
6.1.3 Additional protection
40
English (GB)