31
11.4 Electrical data
Terminal
Designation or number
Function PFU 2000
Technical data
L, N, PE
Voltage supply for PFU 2000.
1 x 230-240 V –10%/+6%, 50 Hz, PE.
A, Y, B
Communication among the units in the GRUNDFOS
Pump Management System 2000.
GRUNDFOS BUS. RS-485, GRUNDFOS BUS proto-
col.
1 - 4
Analog/digital input for motor protection.
Motors 1, 2, 3, 4.
PTC or thermal switch (NC).
PTC according to DIN 44081 or 44082.
5
Monitoring of frequency converter.
NC contact.
6
Analog control signal for frequency converter.
DC 0-10 V.
7
Connection of external LED (fault).
Positive (anode), maximum 5 mA.
8
Connection of external LED (operation).
Positive (anode), maximum 5 mA.
11 and 13
DC 24 V supply for transmitter.
Maximum 70 mA.
12
Analog input 1:
Actual value in the system.
Note: In systems without PMU 2000, pressure trans-
mitters with the following possible signal values are
typically used: 0-10 V, 0-20 mA and 4-20 mA.
In systems with PMU 2000, pressure, differential-pres-
sure or temperature transmitters can be used.
0-10 V.
0-20 mA.
4-20 mA.
NTC 50:
Measuring range: –25 °C to +50 °C.
Resistance value at 25 °C : 30 k
Ÿ.
NTC 150:
Measuring range: 0 °C to +150 °C.
Resistance value at 25 °C : 100 k
Ÿ.
14
Analog input 2:
Input for pressure, pre-pressure, flow-pipe and return-
pipe temperature measuring.
Note: In all systems without PMU 2000, this input is
always used for pre-pressure measuring.
Input signal can be inverted by means of the DIP 1 con-
tact 4.
0-10 V.
0-20 mA.
4-20 mA.
On/off contact (digital).
NTC 50:
Measuring range: –25 °C to +50 °C.
Resistance value at 25 °C : 30 k
Ÿ.
NTC 150:
Measuring range: 0 °C to +150 °C.
Resistance value at 25 °C : 100 k
Ÿ.
15
Analog input 3:
Signal for remote setting of setpoint.
Note: In systems without PMU 2000, only DC 0-10 V
can be used.
DC 0-10 V.
0-20 mA.
4-20 mA.
16
Digital input 4: (Without PMU 2000)
For pressure boosting and water supply applications,
input 4 is laid out for a flow switch.
For heating, air-conditioning and ventilation systems,
input 4 is laid out for an external on/off switch.
Maximum contact load: 12 V / 12 mA.
17
Connection of external reset button, for instance in the
front cover of the control cabinet, or external potentio-
meter for the setting of setpoint.
Maximum contact load: 12 V / 12 mA.
20 and 30
Contactor coil voltage.
29
Frequency converter on/off.
21, 22, 23, 24
On/off of motors 1, 2, 3, 4. Mains operation.
Maximum contact load: 250 V / 8 A, AC1.
25, 26, 27, 28
On/off of motors 1, 2, 3, 4.
Frequency converter operation.
Maximum contact load: 250 V / 8 A, AC1.
31 - 33
Fault signal relay.
Potential-free changeover contacts.
Maximum contact load: 250 V / 0.5 A, AC1.
41 - 43
Operating signal relay.
Potential-free changeover contacts.
Maximum contact load: 250 V / 0.5 A, AC1.
Terminal
Designation or number
Function PMU 2000
Technical data
L, N, PE
Voltage supply for PMU 2000.
1 x 230-240 V –10%/+6%, 50 Hz, PE.
1, 2, 3
Operating signal relay.
Potential-free changeover contacts.
Maximum contact load: 250 V / 1.0 A, AC1.
4, 5, 6
Fault signal relay.
Potential-free changeover contacts.
Maximum contact load: 250 V / 1.0 A, AC1.
7, 8, 9
Communication among the units in the GRUNDFOS
Pump Management System 2000.
GRUNDFOS BUS. RS-485, GRUNDFOS BUS proto-
col.
Содержание Hydro 2000 F
Страница 1: ...Hydro 2000 F Installation and operating instructions GRUNDFOS INSTRUCTIONS ...
Страница 4: ...4 ...
