Omron NT620S Operation Manual page 40

Installation
2-2-2 Power Supply Connection
Note
Note
Connect a 24 VDC power supply to the power input terminals.
- Check the wiring carefully before turning on the power.
- Do not connect an AC power supply to the power supply terminals.
- Use a DC power supply with low voltage fluctuation.
- If complying with EC directives (low voltage directives), observe the following
points:
1. Use a power supply with reinforced insulation to supply power to the PT.
2. If using the EL display type, embed the rear part of the PT in a control panel
so that, after the product has been made ready for installation, the user can-
not touch any part of it other than the part where PT operations are performed
(the front panel).
24 VDC GR
+
S Power supply
In order to comply with EC directives, use a SELV power supply.
Applicable power supply specifications are as follows.
Item
Power supply voltage
Allowable power supply voltage
fluctuation range
Power supply capacity
S Parts used for connection
- For the connection to the power supply terminal block, twisted wires of 0.2
2
mm or greater cross sectional area and M3.5 size crimp terminals must be
used.
Tighten the screws on the terminal block to a torque of 0.5 N@m.
- Do not connect wires that are twisted together directly to the power input termi-
nals. This can cause fire and other hazards.
Use the recommended M3.5 size crimp terminals.
7 mm or less
[Recommended terminals]
Maker
Japan Solderless Terminal MFG
Fuji Terminal
Nichifu Terminal
Breaker
24 VDC Power Supply
24 VDC
20.4 VDC to 26.4 VDC
(24 VDC –15%, +10%)
20 W or over
Fork type
7 mm or less
Type Type
(fork type) (round type)
2-YS3A 2-3.5
2-YAS3.5 V2-S3.5
2Y-3.5 2-3.5
Section 2-2
Value
Round type
Applicable Wire
(stranded wire)
2
2.0 to 2.63 mm
27