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Before installation, operation, maintenance, and inspection, please be sure to read this instruction manual and
all other attached documents thoroughly in order to work safely with the equipment. Please ensure that you fully
understand the equipment, safety information, and precautions that need to be taken before working with the
equipment. Safety precautions are classified as "Caution."
Furthermore, even with items described as
depending on the situation. All of the described contents are important. Therefore, be sure to comply with them.
1. Installation and Wiring work
＊ Ensure that the equipment is mounted and connected correctly. Otherwise, there are risks of failure, burning, or
maloperation.
＊Securely tighten the terminal connection screws. Otherwise, there are risks of failure and burning.
For tightening torque of screws, refer to the following Table.
Nominal
Material
dia.
Steel
M3.5
Steel
M4
Steel
M6
Steel
M10
Caution
Brass
M4
＊The equipment must be correctly grounded using the designated grounding terminals where they exist. Failure to do so
may lead to the risk of electric shock, equipment failure, malfunction or failure to operate.
＊Ensure that the equipment is connected correctly in accordance with the details (e.g.: polarity or phase sequence) shown
on the connection terminals. Otherwise, there is the risk of failure, burning, malfunction, or maloperation.
＊All power supplies and transformers to the equipment must be of suitable capacity and rated load to avoid the risk of
malfunction and maloperation.
＊Be sure to return all terminal covers, protection covers to their original positions once any work is complete. If they remain
uncovered there is a risk of electrical shock.
＊The appropriate connectors must be used to ensure compatibility with the connector terminals to avoid the risks of failure
or fire.
＊When inserting subunit into the case, please ensure that there is no gap between front side of the subunit and the case.
In addition, tighten lower screw surely. If the subunit is inserted inadequately, there are risks of malfunction or generation
of heat.
2. Operating and Setting
The equipment must be used within the following range limits. Otherwise, there is a risk of reducing the performance and life of
the product.
・Variation range of auxiliary power supply voltage
・Frequency variation
・Ambient temperature
・Relative humidity
・Altitude
・The state where abnormal vibration, shock, inclination, magnetic field(※) are not applied
・The state where it is not exposed to harmful smoke/gas, saline gas, water droplet or vapor, excessive dust or fine powder,
explosive gas or fine powder, wind & rain
(※) If there is a large amount of current on main circuit surrounding the relay, the operation indicator may be magnetized and
turned from black to orange color. In that case, please shield back of the relay by iron plate.
－ Safety precautions －
Standard value of
torque
1.10N・m
（11.2kgf・cm）
（9.5～12.9kgf・cm）
1.65N・m
（16.8kgf・cm）
（14.2～19.3kgf・cm）
5.49N・m
（56kgf・cm）
26.5N・m
（270kgf・cm）
（230～310kgf・cm）
0.961N・m
（9.8kgf・cm）
（8.4～11.3kgf・cm）
Caution, there is the possibility of serious consequences
Caution
Allowable range
0.932～1.27N・m
1.39～1.89N・m
4.71～6.37N・m
（48～65kgf・cm）
22.6～30.4N・m
0.824～1.11N・m
Within –15 to +10% of the rated voltage
Within ±5% of the rated frequency
–20 to +60℃
(under the state where dew condensation or freezing does not occur)
30 to 80% on daily average
2000m or lower
2
Place of use
Terminal block
Drawer fixing screw of unit-drawer type
(RD type)
Fixing screw for mounting
MPD-3C bottom screw
MZT primary terminal (k, ℓ)
MPD-3T terminal
JEP0-IL9556
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