SC2 D MO

SC2/D
Signal converter, two stages on-off
section position
2-415
Apr 00
SC2/D is a two stages signal converter for controlling in HVAC- systems.
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Adjustable hysteresis and step-differential
Compact form for easy mounting on a DIN-rail
Function
Function
SC2/D is a two stage signal converter which
converts a 0-10V signal into two closing relay
outputs and can be set for heating or cooling.
SC2/D comes in a standard casing for DIN-rail
mounting and has all settings accessible on the
front.
Control modes
Switches 1-3 are used to set the relay sequence to
fit the application.
SC2/D can be adjusted for the following
applications:
- One stage cooling and one stage heating
- Two stages cooling
- Two stages heating
- Three stages cooling, binary
- Three stages heating, binar
Setpoint
The setpoint is determined by means of the setpoint
knob on the front. The scale is from 0 to 10V and
the value determines at which input signal the first
stage is to be cut out. The stage activates when the
input signal exceeds the set-point by the value
shown on the switch marked DIFF, (the hysteresis).
Hysteresis
The difference in input signal between a relay´s ON-
point and OFF-point. Adjustable and equal for all
steps.
Step differential
The difference in input signal between the relay´s
OFF-points.
Indication
SC2/D has LEDs which indicates that power is on
and that relay outputs are activated.
Two stages in sequence or binary (three stages)
Switchable for heating or cooling
Input signal 0-10V