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9. Mounting
9-1
9. Mounting
9.1 Installation
(1) EH-PT4 module can be installed on both the basic base and expansion base.
(2) Precaution on installation
Upon the installation of the EH-150 series, consider the operability, maintainability and
environment.
(a) For use at proper ambient temperature range
• Secure a sufficient space allowing a good ventilation.
• Do not install the module just over a device generating a great amount of heat(such as heater,
transformer and large capacity resistor).
• If the ambient temperature around the module exceeds 55 °C, set a fan or air conditioner to keep
the temperature below 55 °C.
(b) Do not install the module in panel provided with a high-voltage device.
(c) Keep more than 300 mm away from a high-voltage line and power line.
(d) Installing the basic base 1,000 mm through 1,600 mm from the floor improves the operability.
(e) Secure a clearance of more than 50 mm between the upper and lower sections of the module for
ventilation and maintenance. For the right and left directions, secure a clearance of more than 10
mm.
(f) Never pull out or insert a alive line of the module.
9.2 Mounting Method
(1)Checking a connector
Before and after the installation, check the following two points.
(a) Is there an abnormality on the connector of the basic base or extensive base?
(b) Is there an abnormality in the connector or the module side?
(2)Confirming the external wiring
Before running, confirm the following items:
(a) Check that the connection of the external wiring is proper.
(b) Check that the external wiring terminal board and the module are fastened securely with
screws.
9.3 Maintenance and Inspection
Perform periodic inspection every six months according to the procedure mentioned below.
(1) Remove dust and dirt off the terminal board.
(2) Confirm that the fixing screws of the external wiring terminal board and module are tightened
firmly.