Mitsubishi FR - S500 instruction manual Installation, Power supply

(3) Installation

Avoid hostile environment where oil mist, fluff, dust etc. are floating, and install the inverter in a clean place or put it within an enclosed box where floating bodies will not enter. When placing the inverter inside a box, determine the cooling system and box dimensions so that the ambient temperature of the inverter will fall within the permissible temperature range (refer to page 166 for the specified value).

The inverter may become hot locally, so do not mount it to combustible material such as wood.

Mount the inverter to a wall in a vertical direction.

(4)Setting

By setting the operation panel, the inverter can be run at the speed as high as

120Hz. Therefore, wrong setting will lead to hazardous conditions. Using the maximum frequency setting function, set the upper limit.

(The maximum frequency in the external operation mode is factory-set to 60Hz.)

Setting the DC injection brake operation voltage and operation time to values higher than the factory settings can cause the motor to overheat (electronic overcurrent protection trip).

(5) Power supply

When the inverter is installed near a large-capacity power transformer (500kVA or more at the wiring length of 10m (32.81feet) or less) or the power capacitor is to be switched, an excessive peak current will flow in the power supply input circuit, damaging the inverter. In such a case, always install the FR-BEL or FR- BAL power factor improving reactor.

Power supply	1500	Power factor
equipment	1000	improving reactor
		installation range
capacity (kVA)	500
	0

10 (32.81)

Wiring length (m (feet))

If a surge voltage occurs in the power supply system, this surge energy may flow into the inverter, causing the inverter to display OV1, OV2 or OV3 and come to an alarm stop. In such a case, also install the FR-BEL or FR-BAL power factor improving reactor.

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