Emerson V150 Guide de l'utilisateur télécharger pdf (Page 12)

High-Capacity Rotary Valves

Product Flier

PF51.3:Vee-Ball

May 2009

FIELDVUE Digital Valve Controllers (Continued)

Table 7. Digital Valve Controller Electrical Specifications (HARTr instruments Only)

ELECTRICAL INPUT

POINT-TO-POINT CONNECTION

MULTI-DROP

CONNECTION

(DVC6000 ONLY)

INSTRUMENT

POWER

REVERSE

POLARITY

PROTECTION

Analog Input

Signal

Minimum

Control

Current

Minimum Current

without

Microprocessor

Restart

Maximum

Voltage

Overcurrent

Protection

4 to 20 mA DC

nominal

4.0 mA 3.5 mA 30 VDC

Input circuit limits

current to prevent

internal damage

11 to 30 VDC at

approximately 8 mA

No damage occurs

from reversal of loop

current

Table 8. Digital Valve Controller Electrical Specifications (FOUNDATIONt fieldbus Communication only)

COMMUNICATION PROTOCOL

POWER REQUIREMENTS

Voltage Level

Maximum

Current

Reverse

Polarity

Protection

Termination

FOUNDATION fieldbus registered device

Physical Layer Type(s):

121—Low-power signaling, bus-powered, Entity Model I.S.

511—Low-power signaling, bus-powered, FISCO I.S.

9 to 32 volts 18 mA

Device is not

polarity sensitive

Bus must be properly

terminated per

ISA SP50 guidelines

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 23 24

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Emerson V150 Guide de l'utilisateur Page 12

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