MODEL: MD7ST

MD7ST SPECIFICATIONS

ES-8057 Rev.10 Page 3/6

http://www.m-system.co.jp/

DESCRIPTIONS

With Shield

Cable

Shield

Not Grounded

Shield to Signal

Isolated

Shield to Signal

Not Isolated

FF

Shield

Grounded

FG

Shield

Not Grounded

GF

Shield

Grounded

GG

Without Shield

Signal to Earth

Isolated

Signal to Earth

Not Isolated

FF

GG

• The surge protector has a dedicated shield terminal effective for easy shield wiring and surge protection.

• Review the shield method (grounding, non-grounding, connecting to SG, etc.) required by the protected device or system.

• There is no electrical effect to the shield by installing the surge protector, but an appropriate shield terminal type must be

selected to suit user applications.

• Refer to the flow chart below to choose.

■ SELECTING SHIELD TERMINAL TYPE

MD7ST

5

–

+

2

7

8

4

1

(SHLD)

DIN RAIL

DIN RAIL

ADAPTOR

Fuse/Disconnect

DC Power Supply

4 – 20mA

Transmitter

Field-mount

Surge Protector

(model: MD6x)

+

–

250Ω

Power Bus

To other 4 – 20mA loops

+

–

• Specify ‘Loop disconnect fuse’ type when multiple transmitters are connected to single power bus.

• Loop disconnect fuse is used to separate a transmitter loop from the power bus when it fails in the shortcircuit mode.

SELECTING LOOP DISCONNECT FUSE

■