ABB PSTX Series Installation And Commissioning Manual page 46

Close bypass PSTX470...PSTX1250
5.1.2.9
The built-in bypass contactor in PSTX470..1250 can be
controlled externally for an direct on line (across the line)
start. The built-in bypass contactor is closed by applying
voltage (100VAC/DC – 250VAC/DC) to terminal 2 and 3.
See Figure 5.20.
Tightening torques and cable dimensions.
L N
Bypass
100-250V
control
50/60 Hz K4
5
Modbus RTU
5.1.2.10
Connect digital ground from PLC to the PSTX ground,
terminal 19, 22 or 30.
Terminal 23 to 29 is non-isolated to GND. Terminal 30
is the same as terminal 19 and terminal 22. If voltage is
applied to any terminal 23-29 it may break depending on
the amplitude of the voltage.
Terminal 23 and 24 will break down if voltage are higher
than ±5,5V (relative ground) and have a current more than
150mA. If using different grounds between master and
PSTX make sure that they are totally isolated grounds and
that the master has isolated power. The master must not
have any offset to the PSTX ground.
Figure 5.21.
See chapter 8 Communication
components.
PTC/PT100 input
5.1.2.11
If the motor has PTC or PT100 elements, connect the
cables to terminals 25, 26 and 27.
See chapter7.14 Inputs/outputs for programming.
3-wire measurement for PT100
To reduce the influence of the wire resistance, you can
use a 3-wire connection. This creates 2 measuring
circuits. One circuit is used for reference. This way, the
tripping device can calculate the wire resistance. See
Figure 5.22.
Tightening torques and cable dimensions.
Com 3
+(B) -(A)
23 24 25 26 27
46 Connection | Installation and commissioning manual |
Start Stop In0 In1 In2 GND +24V
K5 K6
for communication
Temp In Analog out
T1 T2 T3
+24V + GND
28 29 30
Figure 5.20
Close bypass PSTX470...PSTX1250
M3
3,5 x 0,6 mm
(0.138 x 0.024 in)
0,5 Nm
4,3 lb.in
Figure 5.21
Modbus RTU
PT 100 - 3 wire
Figure 5.22
PT100 - 3 wire
3,5 x 0,6 mm
M3
(0.138 x 0.024 in)
0,5 Nm
4,3 lb.in
1SFC132081M0201
AWG 12 ... 24
2
0,2 .. 2,5 mm
2
2x0,2 .. 1,5 mm
2
0,2 .. 2,5 mm
2
2x0,2 .. 1,5 mm
Com 3 Temp In Analog out
+(B) -(A) T1 T2 T3 +24V + GND
23 24 25 26 27 28 29 30
+ -
Digital
GND
PLC
Com 3 Temp In Analog out
T1 T2 T3
+(B) -(A) +24V + GND
23 24 25 26 27 28 29 30
AWG 12 ... 24
2
0,2 .. 2,5 mm
2
2x0,2 .. 1,5 mm
2
0,2 .. 2,5 mm
2
2x0,2 .. 1,5 mm