Hitachi L100-MFR2 Series Instructions d'installation et d'utilisation

Application Note:

Driving a Solid-State Relay

With the L100-MFR2 Series

Please refer also to the

Inverter Instruction Manual

AN030404-1

Hitachi America, Ltd.

©2004 Hitachi America, Ltd.

Page 1 of 2

Application Note: L100-MFR2 Series Inverter –

Driving a Solid-State Relay with the Inverter

Intelligent Outputs

Sometimes it may be necessary to drive a relay to activate certain external devices such as

electromechanical brakes or clutches. Typically electromechanical relays have a 24VDC coil voltage. In the

case of the L100-MFR2 Series of Inverters, such voltage is NOT available on any of the inverter terminals.

However 10 VDC is supplied by the L100-MFR2 at the [H] terminals, and can be used to drive a small

solid-state relay instead. Such relays are typically capable of being driven by 5 – 32 V dc, or some similar

range, and can switch a variety of AC or DC voltage levels.

By using a circuit similar to that in the diagram below, you may drive a solid-state relay, using the drive’s

internal 10 Vdc supply. Terminals [H], [L], [CM2] and [12] of the L100 MFR2 Series Inverters are being

utilized.

Figure 1 – Typical Setup

H

L

CM2

12

L100-MFR2

Hitachi Inverter

Solid-State

Relay

Pos +

Neg -

LOAD

L

N

24-330V AC

Jumper

4-32V DC

Model# G3NA-205B DC-24

was used for this test

Omron Electronics

Note: Any solid-state relay capable of accepting a 10 VDC input should work.

Hitachi America, Ltd.

©2004 Hitachi America, Ltd.

Page 2 of 2

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