Inputs And Outputs - Grundfos CUE Series Product Manual

Technical data

Inputs and outputs

Mains supply (L1, L2, L3)
Supply voltage
Supply voltage
Supply voltage
Supply voltage
Supply frequency
Maximum temporary imbalance between
phases
Leakage current to earth
Number of cut-ins, enclosure A
Number of cut-ins, enclosures B and C
Number of cut-ins, enclosures D
Note: Do not use the supply voltage for switching the
CUE on and off.
Motor output (U, V, W)
Output voltage
Output frequency
Switching on output
1)
Output voltage in% of supply voltage.
2)
Depending on the pump family selected.
RS-485 GENIbus connection
Terminal number
The RS-485 circuit is functionally separated from other
central circuits and galvanically separated from the
supply voltage (PELV).
Digital inputs
Terminal number
Voltage level
Voltage level, open contact
Voltage level, closed contact
Maximum voltage on input
Input resistance, R
i
All digital inputs are galvanically separated from the
supply voltage (PELV) and other high-voltage termi-
nals.
200-240 V ± 10 %
380-500 V ± 10 %
525-600 V ± 10 %
525-690 V ± 10 %
50/60 Hz
3 % of rated value
>3.5 mA
max. 2 times/min.
max. 1 time/min.
max. 1 time/2 min.
1)
0-100%
2)
0-100 Hz
not recommended
68 (A), 69 (B), 61 GND (Y)
18, 19, 32, 33
0-24 VDC
> 19 VDC
< 14 VDC
28 VDC
Approx. 4 kΩ
Signal relays
Relay 01, terminal number
Relay 02, terminal number
Maximum terminal load (AC-1)
Maximum terminal load (AC-15)
Maximum terminal load (DC-1)
Minimum terminal load
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
Voltage signal
Voltage range
Input resistance, R
i
Maximum voltage
Analog input 2, terminal number
Current signal
Current range
Input resistance, R
i
Maximum current
Maximum fault, terminals 53, 54
The factory setting is voltage signal "U".
All analog inputs are galvanically separated from the
supply voltage (PELV) and other high-voltage termi-
nals.
Analog output
Analog output 1, terminal number
Current range
Maximum load to frame
Maximum fault
The analog output is galvanically separated from the
supply voltage (PELV) and other high-voltage termi-
nals.
MCB 114 sensor input module
Analog input 3, terminal number
Current range
Input resistance
Analog inputs 4, terminal number
Analog inputs 5, terminal number
Signal type, 2- or 3-wire
Note: When using Pt100 with 3-wire cable, the resist-
ance must not exceed 30 Ω.
Grundfos CUE
1 (C), 2 (NO), 3 (NC)
4 (C), 5 (NO), 6 (NC)
1)
240 VAC, 2 A
1)
240 VAC, 0.2 A
1)
50 VDC, 1 A
24 V DC 10 mA
24 V AC 20 mA
53
1)
A53 = "U"
0-10 V
Approx. 10 kΩ
± 20 V
54
1)
A54 = "I"
0-20, 4-20 mA
Approx. 200 Ω
30 mA
0.5 % of full scale
42
0-20 mA
500 Ω
0.8 % of full scale
2
0/4-20 mA
< 200 Ω
4, 5
7, 8
Pt100/Pt1000
51