Omron ZW-XC7 User Manual page 9

- Do not step on a fiber cable or place anything heavy on it.
- Do not apply any twisting stress to the fiber cable.
• Securely fasten the terminal block to prevent injury when you press in the release button with a screwdriver.
3. Grounding
• Use a frame ground terminal of the specified size to be grounded.
Terminal screw: M4
Crimp-type terminal
8.5mm
or less
• Use D-type grounding (ground resistance of 100 Ω or less). Make the ground point as close as possible and
make the ground wire used as short as possible.
• Never a ground wire with other equipment and never ground to building beams. Doing so could cause
negative impacts.
• The power supply circuit of the Sensor Controller is not insulated from the internal circuits.
• When grounding the positive (+) terminal of the 24 VDC power supply, do not connect the Sensor Controller's
frame ground terminal or PLC's frame ground terminal to ground. [(1), (2)]
The PC housing may be internally connected to the SG (0 V), in which case current will flow through the path
shown below and may cause seizure.
• If there is no PC, or specifically there is no SG (0 V)/FG short-circuiting path, grounding the Sensor
Controller's frame ground terminal will not cause seizure. Wire the PLC after checking the specification of
your PLC.
• The dedicated RS-232C cable (ZW-XRS2/XPT2) has its cable shield isolated from the connector housing.
[(3)]
Sensor Controller
24V 24V
24 V DC
power
supply
SG
SG
FG FG
(1)
4. Regulations and Standards
• EN61326-1
• Electromagnetic environment : Industrial electromagnetic environment (EN/IEC 61326-1 Table 2)
• The following condition is applied to the immunity test of this product.
: There may be cases that current or voltage output fluctuate within ± 3%F.S. when a sensor is experienced
electromagnetic interference.
• EMC directive
No.2004/108/EC(before 2016/4/19)
No.2014/30/EU(after 2016/4/20)
• Notice for Korea Radio Law
Ａ급 기기 （업무용 방송통신기자재）
이 기기는 업무용 ( Ａ급 ) 전자파적합기기로서 판매자
또는 사용자는 이 점을 주의하시기 바라며 , 가정외의
지역에서 사용하는 것을 목적으로 합니다.
ZW-7000 User's Manual
8.5mm
or less
Power supply
circuit connector housing
connector housing
SG: Signal Ground (0 V for 24 V DC power supply)
FG: Frame Ground
PC or PLC
RS-232C
SG SG
SG SG
RS-232C
FG
FG
(3)
SG SG SG SG
Ethernet
Ethernet
FG
FG
FG
FG
(2)
7