Eurotherm 3216i User's Guide download pdf (Page 18)

2.7 Indicator Power Supply

1. Before connecting the indicator to the power

line, make sure that the line voltage corresponds

to the description on the identification label.

2. Use copper conductors only.

3. The power supply input is not fuse protected.

This should be provided externally.

4. For 24V the polarity is not important.

• High voltage supply: 100 to 240Vac, -15%,

+10%, 50/60 Hz

• Low voltage supply: 24Vac/dc, -15%, +10%

• Recommended external fuse ratings are as

follows:-

For 24 V ac/dc, fuse type: T rated 2A 250V

For 100-240Vac, fuse type: T rated 2A 250V.

2.8 Example Wiring Diagram

This shows 32h8i connected to a strain gauge bridge.

Safety requirements for permanently connected

equipment state:

• A switch or circuit breaker shall be included in

the building installation

• It shall be in close proximity to the equipment

and within easy reach of the operator

• It shall be marked as the disconnecting device for

the equipment.

Note: a single switch or circuit breaker can drive more

than one instrument.

Line

Neutral

Power Supply

Signal | Txdcr Supply

Fuse

- + Cal1 Cal2 Ext- Ext+ HF HE HD AC AB AA

N L 3D 3C 3B 3A LC LB 2B 2A 1B 1A

32h8i/SG Indicato

CAL

Strain

Gauge

24V

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 45 46

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Eurotherm 3216i User's Guide Page 18