Grundfos CUE Series Product Guide

Technical data
Grundfos CUE
51
Inputs and outputs
Mains supply (L1, L2, L3)
Note: Do not use the supply voltage for switching the
CUE on and off.
Motor output (U, V, W)
1)
Output voltage in% of supply voltage.
2)
Depending on the pump family selected.
RS-485 GENIbus connection
The RS-485 circuit is functionally separated from other
centr
al circuits and galvanically separated from the
supply voltage (PELV).
Digital inputs
All digital inputs are galvanically separated from the
supply voltage (PELV) and other high-voltage termi-
nals.
Signal relays
1)
IEC 60947, parts 4 and 5.
The relay contacts are galvanically separated from
other circuits by reinforced insulation (PELV).
Analog inputs
The factory setting is voltage signal “U”.
All analog inputs are galvanically separated from the
suppl
y voltage (PELV) and other high-voltage termi-
nals.
Analog output
The analog output is galvanically separated from the
supply voltage (PELV) and other high-voltage termi-
nals.
MCB 114 sensor input module
Note: Wh
en using Pt100 with 3-wire cable, the resist-
ance must not exceed 30 Ω.
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 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.
Number of cut-ins, enclosures D max. 1 time/2 min.
Output voltage
0-100%
1)
Output frequency
0-100 Hz
2)
Switching on output not recommended
Terminal number 68 (A), 69 (B), 61 GND (Y)
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
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 V DC 10 mA
24 V AC 20 mA
C Common
NO Normally open
NC Normally closed
Analog input 1, terminal number 53
Voltage signal
A53 = "U"
1)
Voltage range 0-10 V
Input resistance, R
i
Approx. 10 kΩ
Maximum voltage ± 20 V
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, terminals 53, 54 0.5 % of full scale
Analog output 1, terminal number 42
Current range 0-20 mA
Maximum load to frame 500 Ω
Maximum fault 0.8 % of full scale
Analog input 3, terminal number 2
Current range 0/4-20 mA
Input resistance < 200 Ω
Analog inputs 4, terminal number 4, 5
Analog inputs 5, terminal number 7, 8
Signal type, 2- or 3-wire Pt100/Pt1000

Grundfos CUE Series Specifications

General

Category	DC Drives
Output Voltage	24 V DC
Control Signal	0-10 V, 4-20 mA
Communication	Modbus RTU
Protection Features	Overvoltage, overcurrent, overtemperature, short circuit
Humidity	5% to 95% (non-condensing)
Enclosure class	IP20
Enclosure Rating	IP20