Watlow Series 988LF Manual de usuario descargar pdf (Pagina 19)

WATLOW Series 988LF User’s Manual 2.9

Installation and Wiring, Chapter 2

Figure 2.9a — AC Outputs

Solid-state Relay with Contact Suppression

98 _ L - _ _ B _ - A A _ _

0.5 amps, minimum off-state impedance: 20KΩ

Electromechanical Relay with Contact Suppression

(NO and COM contacts only)

98 _ L - _ _ D _ - A A _ _

Form C, 5 amps, minimum off-state impedance: 20KΩ

Electromechanical Relay without Contact Suppression

98 _ L - _ _ E _ - A A _ _

Form C, 5 amps off-state impedance: 31MΩ

Solid-state Relay without Contact Suppression

98 _ L - _ _ K _ - A A _ _

0.5 amps, off-state impedance: 31MΩ

Output 1 Wiring

Figure 2.9b — Switched DC, Open Collector

98 _ L - _ _ C _ - A A _ _

Minimum load resistance: 500Ω

External

Load

COM

Fuse

(#14 for D & E outputs only)

External

Load

COM

Figure 2.9d — 0-5V

ÎÎ

, 1-5V

ÎÎ

and 0-10V

ÎÎ

(dc) Process

98 _ L - _ _ F _ - A A _ _

Minimum load impedance: 1KΩ

Figure 2.9c — 0-20mA and 4-20mA Process

98 _ L - _ _ F _ - A A _ _

Maximum load impedance: 800Ω

+ VDC

Internal Circuitry

790Ω

19 to 32VÎ (VDC)

NOTE:

Successful installa-

tion requires five

steps:

• Model number and

software choice

(Appendix);

• DIP switch set-

tings (Chapter 1);

• Sensor match

(Chapter 2 and

Appendix);

• Sensor installation

(Chapter 2); and

• Wiring (Chapter 2).

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