IDEC High Performance Series - Manual (Page 1359)

WindO/I-NV2 User’s Manual 34-43
3 HG1F
34
MICRO/
I Specif
ication
s
3.8 Wiring
●
Power Supply Terminal
• Pin assignment is shown in the following table.
• Use applicable cables for wiring and recommended ferrules (made by Phoenix Contact) as follows.
●
Grounding Cautions
If you decide to use a single power supply for the HG1F with more than one external device, take extra precautions.
Some external devices may produce electrical noise and short circuit the entire system setup, therefore, damaging the
communication circuit of the HG1F and non-isolated Communication Device (i.e. PLC).
To prevent such damage, choose a proper solution depending on your system setup.
• Use a separate earth ground from the external noise source device.
• The wire for grounding should be thick and short in order to direct the noise from the noise source device to the
earth ground.
• Use a separate power supply from the external noise source device.
• Insert an isolator on the communication line of the HG1F and the non-isolated communication device (i.e. PLC) to
prevent damage.
●
Cautions for using the HG1F connected to a personal computer
When connecting the HG1F to a personal computer via the Serial Interface the HG1F or the personal computer may
break down depending on the conditions of the personal computer. Make sure of the following cautions, in order to
prevent an accident.
• If the personal computer has a 3-pin power plug or power plug with a ground lead type. make sure to use a plug
socket including a ground input electrode or ground the earth lead, respectively.
• If the personal computer has a 2-pin power plug without ground lead, follow the procedure below when connect
the HG1F to the personal computer.
(1) Pull out the power plug of the personal computer from the AC outlet.
(2) Connect the HG1F to the personal computer.
(3) Insert the power plug of the personal computer into the AC outlet.
CAUTION
• Turn off the power supply before wiring.
• Make the wiring as short as possible and run all wires as far away as possible from high-voltage
and large-current cables. Follow all the procedures and precautions when wiring the HG1F.
• Separate the HG1F power supply wiring from the power lines of I/O devices and motor equipment.
• Ground the functional earth terminal to make sure of correct operation.
+ Power supply 24V DC (+24V)
- Power supply 0V (0V)
Functional Earth (FE)
Applicable cable AWG18 to AWG22
Recommended
Pressure Terminal
AI 0.34-6 TQ
AI 0.5-8 WH
AI 0.75-8 GY
AI 1-8 RD
AI-TWIN 2×0.5-8 WH (TWIN Pressure Terminal)
(Phoenix Contact)
Tightening Torque 0.5 to 0.6 N•m