Connections - Grundfos TPE 2000-Serie Installationsanleitung

5.1.9 Connections

If no external on/off switch is connected,
Note
connect terminals 2 and 3 using a short wire.
As a precaution, the wires to be connected to the following
connection groups must be separated from each other by
reinforced insulation in their entire lengths:
Group 1: Inputs
• start/stop terminals 2 and 3
• digital input terminals 1 and 9
• setpoint input terminals 4, 5 and 6
• sensor input terminals 7 and 8
• GENIbus terminals B, Y and A
All inputs (group 1) are internally separated from the mains-
conducting parts by reinforced insulation and galvanically
separated from other circuits.
All control terminals are supplied with protective extra-low
voltage (PELV), thus ensuring protection against electric
shock.
Group 2: Output (relay signal, terminals NC, C, NO).
The output (group 2) is galvanically separated from other
circuits. Therefore, the supply voltage or protective extra-low
voltage can be connected to the output as desired.
Group 3: Mains supply (terminals N, PE, L).
Group 4: Communication cable (8-pin male socket) - only
TPED
The communication cable is connected to the socket in group
4. The cable ensures communication between the two pumps,
whether one or two pressure sensors are connected, see
section 5.6 Communication cable for TPED pumps.
The selector switch in group 4 enables changeover between
the operating modes "alternating operation" and "standby
operation". See description in section 6.2.1 Additional
operating modes – TPED pumps.
NC C NO N PE L
0-10 V
0/4-20 mA 4-20 mA
0/1
1 9 8 7
STOP
RUN
0/4-20 mA 0-10 V
10K
6 5 4 3 2
Fig. 4 Connection terminals TPE Series 2000
1: Digital input
9: GND (frame)
8: +24 V
7: Sensor input
B: RS-485B
Y: Screen
B Y A
A: RS-485A
6: GND (frame)
5: +10 V
4: Setpoint input
3: GND (frame)
2: Start/stop
NC C NO
0-10 V
0/4-20 mA 4-20 mA
0/1
B Y A 1 9 8 7
STOP
RUN
0/4-20 mA 0-10 V
10K
6 5 4 3 2
Fig. 5 Connection terminals TPED Series 2000
A galvanic separation must fulfil the requirements for reinforced
insulation including creepage distances and clearances specified
in EN 60335.
N PE L
1: Digital input
9: GND (frame)
8: + 24 V
7: Sensor input
B: RS-485B
Y: Screen
A: RS-485A
6: GND (frame)
5: + 10 V
4: Setpoint input
3: GND (frame)
2: Start/stop
9