RKC INSTRUMENT Z-TIO-G, Instruction Manual, Page: 40 / 246

5. WIRING
5-2
IMS01T28-E4
5.1 Wiring Cautions
This chapter describes wiring cautions, wiring layout and wiring of terminals.

To avoid noise induction, keep input/output signal wires away from instrument power line, load lines and
power lines of other electric equipment.

If there is electrical noise in the vicinity of the instrument that could affect operation, use a noise filter.

Shorten the distance between the twisted power supply wire pitches to achieve the most effective noise
reduction.

Always install the noise filter on a grounded panel. Minimize the wiring distance between the noise
filter output and the instrument power supply terminals to achieve the most effective noise reduction.

Do not connect fuses or switches to the noise filter output wiring as this will reduce the effectiveness
of the noise filter.

Allow approximately 8 seconds for contact output when the instrument is turned on. Use a delay relay
when the output line is used for an external interlock circuit.

Power supply wiring must be twisted and have a low voltage drop.

For an instrument with 24 V power supply input, supply power from a “SELV” circuit defined as IEC
60950-1.

A suitable power supply should be considered in end-use equipment. The power supply must be in
compliance with a limited-energy circuits (maximum available current of 5.6 A).

Supply the power to only one of the joined modules. When power is supplied to any one of the joined
modules, all of the joined modules will receive power.

Select the power capacity which is appropriate for the total power consumption of all joined modules and
the initial current surge when the power is turned on.
Power consumption (at maximum load): 120 mA max. (at 24 V DC)
Rush current: 10 A or less

When using a relay contact output as a control output, connect the secondary circuits isolated from the
mains circuit. For example, connect an isolation transformer between the mains circuit and the instrument.
The relay output terminal of the instrument needs to be wired to the secondary side of the isolation
transformer.

For the terminal type module, use the specified solderless terminals. Only these specified solderless terminals
can be used due to the insulation between the terminals.
Screw Size: M3

7 (with 5.8

5.8 square washer)
Recommended tightening torque:
0.4
N ･ m (4 kgf ･ cm)
Applicable wire: Solid/Twisted wire of 0.25 to 1.65 mm
2
Specified solderless terminals:
Manufactured
by J.S.T MFG CO., LTD.
Circular terminal with isolation V1.25

MS3
(M3 screw, width 5.5 mm, hole diameter 3.2 mm)

Make sure that during field wiring parts of conductors cannot come into contact with adjacent conductive
parts.
To prevent electric shock or instrument failure, do not turn on the power until all
wiring is completed. Make sure that the wiring is correct before applying power to
the instrument.
WARNING
!

5.5 MAX

3.2 MIN
5.6 mm
9.0 mm

3.2