Watlow SBL Card Instrukcja Użytkownika Pobierz pdf

SBL Card Data Sheet 1

General Description

The Watlow SBL card is a stand-alone control card

which accepts a proportional 4-20mA command

signal from a temperature control. It provides a

variable time-base, proportional output for a zero

cross-fired, DC input solid state relay (SSR). The

SBL can drive one SSR for single phase or two

SSRs for three-phase, two-leg applications. The

SBL is loop powered from the 4-20mA, so there is

no need for an external power supply. It easily

attaches to the SSR input terminals, making it a

compact power control with a variety of voltages and

amperages limited only by the SSR’s output.

Specifications

Dimensions

Bias Gain

2.0"

(51 mm)

2.67"

(68 mm)

SBL

08-5399

Setup Procedure

WSBL-XDSN Rev A00

January, 1996

Power Controls

Watlow Controls, 1241 Bundy Blvd.,

P.O. Box 5580, Winona, MN 55987-5580

Phone: 507/454-5300, Fax: 507/452-4507

SBL Card

1. Set the temperature control command signal to

20mA.

2. Adjust the Gain potentiometer until the SSR

output is just full ON (LED full on).

3. Set the temperature control command signal to

4mA.

4. Adjust the Bias potentiometer for ZERO output at

4mA (LED full off).

5. Repeat Steps 1 through 4 until no further

adjustment is required.

• Power Requirements: 4-20mA DC current.

Temperature controls must provide at least

7.5VDC (375Ω SBL input impedance).

• Linearity: Within ± 3% over a 20 to 80% power

region.

• Operating Temperature: 32 to 122°F/ 0 to 50°C

0 to 90% RH, non-condensing.

• Firing Mode: Variable Time Base @ 50% power,

3 cycles ON, 3 cycles OFF, zero-cross switching

with 1/2 cycle resolution.

• Output: 3.5VDC minimum. Current is dependent

upon the SSR input impedance.

1 2

Podsumowanie treści

Strona 1 - SBL Card

SBL Card Data Sheet 1 General DescriptionThe Watlow SBL card is a stand-alone control cardwhich accepts a proportional 4-20mA commandsignal from a tem

Strona 2 - Wiring Diagrams

2 SBL Card Data Sheet Troubleshooting Wiring DiagramsThree Phase, Two LegNOTE: The SBL Card can operate a maximum of 2SSR's wired for 3 phase-

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Watlow SBL Card Instrukcja Użytkownika

Przeglądaj online lub pobierz Instrukcja Użytkownika dla Czujniki Watlow SBL Card. Watlow SBL Card User Manual Instrukcja obsługi

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