Description
Watlow Loyola SBL 08-5399 Control Card 4-20mA
From the manufacturer:
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.
- 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
Condition: Used
This used control card has been inspected and appears to be in good condition. It was pulled from a working environment where it was in use and functional. Please view our photo set and contact us if you have any questions.
