Connecting To The Power Supply - Vexta EMP400 Series Operating Manual

5.2

Connecting to the power supply

The controller's power supply is connected to the TB1 terminals. In addition to the power-supply
terminals, TB1 has a frame ground (FG) terminal to prevent malfunctions caused by external noise.
The power supply provides a voltage of 24VDC ± 5% with current consumption of 0.45A max. The
current consumption level includes the current supplied to the operational unit.
Use round, insulated crimp terminals for power and grounding cables.
Note
The power supply should be designed to provide ample capacity. Insufficient power capacity may
cause an error in the controller operation.
1. Remove the terminal cover from TB1.
2. Remove the positive and negative terminal screws, then
connect the 24VDC power cable.
Verify that the connection has the proper polarity.
Note
For the power cable, use the cable of AWG20 (0.5mm
more in diameter. Any cable with a smaller diameter
may cause heat generation.
3. Tighten terminal screws at a tightening
torque of 0.5N·m (71oz-in).
4. Remove the FG terminal screws and connect the
grounding cable.
Note
For the power cable, use the cable of AWG18 (0.75mm
or more in diameter. Any cable with a smaller diameter
may cause heat generation.
5. Tighten terminal screws at a tightening
torque of 0.5N·m (71oz-in).
6. Secure the grounding cable connected to the FG
terminal to the ground point, using screws with an inner
clip washer.
The above grounding cable should be grounded at one
point together with the grounding cable connected to
the driver's protective earth terminal.
7. Place the terminal cover on TB1.
TB1 signals
Symbol
+24V power
GND
FG
Signal Description
Input terminal of the power supply
Ground of the power supply
Frame ground
5 5 5 5 5
2
) or
Controller
2
)
Grounded at
one point
Connection
24VDC/+ terminal
24VDC/- terminal
FG terminal
Driver
5-3