Bulletin 100-50-9.1 –
Page 7
The S3C Case Control is equipped with the required
inputs and outputs for advanced control of medium and
low temperature refrigerated display cases in a variety of
configurations.
1. One stepper motor driven valve. This can be
configured for multiple valve types and control of
either an electronic expansion valve (EEV) or electronic
evaporator pressure regulating valve (EEPR). Short
circuit protection and open circuit detection is
incorporated.
2. Two 0 – 10V DC outputs for controlling dimmable LED
lighting and variable speed fans.
3. One Solid State Relay output for control of Liquid Line
Solenoid or Pulse EEVs.
4. One Form C relay output for evaporator fan control.
5. One Form A relay output for lighting control.
6. One Form C relay output for control of defrost. (Heater
Contactor, Drain Heater, Hot Gas Valve, etc.)
7. One 5V logic output for control of an external Solid State
relay for switching Anti-Sweat Heaters.
8. Three Digital inputs; One Door Switch, one Service
Switch and one User configurable.
9. Five Thermistor Temperature Sensor inputs (2K, 3K,10K
selectable) for Coil Outlet, Discharge Air, Return Air,
Defrost Termination and One Auxiliary.
10. One Pressure Transducer input with 5V excitation
voltage.
11. One Clogged Drain Sensor input.
12. One Occupancy Sensor input.
13. One Ambient Temperature/Humidity sensor input.
14. Two Ethernet RJ-485 Connectors, One RS-485
connection.
2. SYSTEM COMPONENTS
2.1
S3C CASE CONTROL
DIP Switch
2.2
S3C VALVE MODULE
The S3C Valve Module expands the control capabilities of
the S3C control system by providing additional inputs and
outputs required for more complex applications.
1. Two stepper motor driven valves. These can be
configured for multiple valve types and control of
either two additional EEVs or one EEV and an EEPR.
Short circuit protection and open circuit detection is
incorporated.
For control of an EEPR with the S3C Valve Module
set the "DIP Switches" 1 – 3 in the down position. For
control of 1 – 2 EEV(s) with the S3C Valve Module set
the "DIP Switches" 1 up and 2, 3 in the down position.
See System Operation section for more information on
configuration and set-up.
Note: DIP switch 4 does
not affect valve operation.
2. One Solid State Relay output for control of Liquid Line
Solenoid or Pulse EEVs.
3. Six Thermistor Temperature Sensor inputs (2K, 3K, 10K
selectable) for two Coil Outlet, two Discharge Air and
two Defrost Termination.
4. One Pressure Transducer input with 5V excitation
voltage.
