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3.2
Connection of Power Supply
Power supply
Rated voltage: 24 V DC
requirements
Voltage range: 18 V to 30 V
Caution
!
Pinout of the plug
The four-pin socket for the power supply has the following pin assignment:
connector for the
power supply
Terminal block
The power supply is connected via the four-pole terminal block supplied as
follows:
Electrical bonding
The grounding screw on the rear panel of the unit (see Figure 3-1) must be
(grounding screw)
connected to the cabinet ground.
OP37/Pro Equipment Manual
Release 7/98
With a 24 V supply, make sure the extra-low voltage is safely isolated.
Use only power supply units to IEC 364-4-41 or HD 384.04.41
(VDE 0100, Part 410) standard!
The supply must must be within the above-mentioned voltage range. If it is
not, the possibility of functional failure on the part of the unit can not be
excluded.
1 2 3 4
Contact assembly (without function)
GND
+ 24 V DC
Secure wires in terminal block (wire cross-sectional area: 0.5...2.5 mm
Plug terminal block into lower connector on OP
Electrical Installation
2
)
3-7
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