Dutypoint VT Booster Set, O & M Manual

Page: 106 / 123

English (GB)
7
6.9 Other connections
The connection terminals of external potential-free contacts for
start/stop and digital functions, external setpoint signal, sensor
signal, GENIbus and relay signal are shown in fig.
11 .
1. Inputs (external start/stop, digital functions, setpoint and
sensor signals, terminals 1-13, and bus connection (optional),
terminals B, Y, 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 by protective extra-low
voltage (PELV), thus ensuring protection against electric
shock.
2. Output (relay signal, terminals NC, C, NO).
The output (group 2) is galvanically separated from other
circuits. A maximum supply voltage of 250 V or protective
extra-low voltage can be connected to the output as desired.
3. Mains supply (terminals L1, L2, L3, PE).
A galvanically safe separation must fulfil the requirements for
reinforced insulation including creepage distances and
clearances specified in EN 61800-5-1.
Fig. 11 Connection terminals
7. Signal cables
• Use screened cables having a cross-sectional area of min.
0.5 mm
2
and max. 1.5 mm
2
for external on/off switch, digital
inputs, setpoint and sensor signals.
• The screens of the cables must be connected to frame at both
ends with good frame connection. They must be as close as
possible to the terminals, fig.
12 .
Fig. 12 Stripped cable with screen and wire connection
• Screws for frame connections must always be tightened
whether a cable is fitted or not.
• The wires in the motor terminal box must be as short as
possible.
7.1 Bus connection cable
7.1.1 New installations
For the bus connection a screened 3-core cable having a
cross-sectional area of min. 0.5 mm
2
and max. 1.5 mm
2
must be
used.
• If the motor is connected to a unit with a cable clamp which is
identical to the one on the motor, the screen must be
con3nected to this cable clamp.
• If the unit has no cable clamp as shown in fig. 13 , the screen is
left unconnected at this end.
Fig. 13 Connection with screened 3-core cable
7.1.2 Replacing an existing motor
• If a screened 2-core cable is used in the existing installation, it
must be connected as shown in fig. 14 .
Fig. 14 Connection with screened 2-core cable
• If a screened 3-core cable is used in the existing installation,
follow the instructions in section
7.1.1 New installations .
Note
If no external on/off switch is connected,
short-circuit terminals 2 and 3 using a short wire.
Warning
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:
MGE 90 to MGE 132
TM
02
90
32
15
04
NC C NO L1 L2 L3
10K
RUN
STOP
1 9 8 7
6 5 4 3 2
B Y A
0-10 V
0/4-20 mA 4-20 mA
0/4-20 mA 0-10 V
10 11 12 13
1/0
1/0
1/0
Grou
p 1
Group 2 Group 3
Switching follows the function of digital input 4.
Factory setting: "Min. <-> Not active"
13: GND (frame)
12: Analog output
11: Digital input 4
10: Digital input 3
1: Digital input 2
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
T
M
00
76
67
16
96
Note
Only if the optional GENIbus terminal is fitted.
TM
02 884
1 090
4
T
M
02
88
42
09
04
A
Y
B
A
Y
B
1
2
3
1
2
3
Motor
A
Y
B
A
Y
B
1
2
1
2
Motor