GE MN-ValVue-v2-8-IOM Manuel de service télécharger pdf (Page 277)

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Optional Switch Load Limits

Output Switches

Introduction

The SVIi1000 supports two identical contact outputs, SW #1 and SW #2 (Digital Output switches),

that can be logically linked to status bits. The Digital Output switch terminals are solid state

contacts. Each switch requires its own power source and must be connected to the appropriate

connector on the Electronics Module Terminal Board.

The switches are polarity sensitive and must be connected only to a DC circuit. The switch (+)

terminal must be electrically positive with respect to the ( –) terminal. If the (+) terminal is

electrically negative with respect to the (–) terminal, then the switch will conduct.

There must be a series load in the circuit to prevent damage to the switch. If the switch is

connected directly across the power source the current will be limited only by the capacity

of the power source and the switch can be damaged.

This section discusses the necessary precautions when configuring a system.

Incorrect polarity connection results in an effectively closed connection.

Consult with qualified personnel to ensure that electrical requirements for the

switch are met.

Switch OFF Switch ON

SWITCH

30 VDC max.  1 V (Switch saturation voltage)

SWITCH

 0.200 mA (Switch leakage current) 1 A max.

CAUTION

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GE MN-ValVue-v2-8-IOM Manuel de service Page 277

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