Used for driving Solid State Relays (12-24V DC). Linear Output: Used for proportional control (4-20mA).
Attach the supplied mounting brackets from the rear, sliding them forward until they lock securely against the panel wall. Wiring Terminal Assignments
Before wiring, verify that the model number matches your available power source and field sensors. Disconnect all power loops before making terminal connections.
To get the most out of your controller, download the official Yamatake (Azbil) SDC20 user manual today, bookmark the parameter list, and refer to the operation flowchart every time you program a new loop. yamatake sdc20 user manual
[ Top Terminals ] (1) Power Line L/A (7) Alarm Output 1 (2) Power Line N/B (8) Alarm Output 2 (Optional) (3) Control Output (+) (9) Digital Input (DI) Com (4) Control Output (-) (10) Digital Input (DI) 1 (5) [Unused / Option] (11) RS-485 Comm A (Optional) (6) [Unused / Option] (12) RS-485 Comm B (Optional) (13) Sensor Input A / T.C. (+) (14) Sensor Input B / T.C. (-) (15) Sensor Input B' (For 3-wire RTD) [ Bottom Terminals ]
Set to "Direct" for cooling or "Reverse" for heating.
: This comprehensive manual covers installation, wiring, component functions, and troubleshooting. Direct Download (PDF): Gongkong.com Technical Data Online Viewer: Archive.org - DigitroniK SDC20/21 Manual CPL Communications Manual Used for driving Solid State Relays (12-24V DC)
| | Meaning | Solution (from manual) | | :--- | :--- | :--- | | S.ERR | Input sensor break (thermocouple or RTD open) | Check wiring continuity; replace sensor. | | L.ERR | Input under-range (lower than sensor limit) | Verify sensor type configuration (InP). | | H.ERR | Input over-range | Check for short circuit or wrong sensor. | | E.SEr | A/D converter error, serious hardware fault | Power cycle. If persistent, return for repair. | | LoOp | Loop break alarm (no PV change despite output) | Check heater, contactor, or actuator. |
The Yamatake SDC20 is a powerful digital temperature controller, and this official user manual covers just about everything you need to know. It’s well-organized into sections for installation, wiring, parameter settings, and auto-tuning.
The PV display will flash if a sensor break or input error occurs – immediately check Chapter 8. Wiring Terminal Assignments Before wiring, verify that the
While you should always verify your specific model number configuration suffix, standard Yamatake SDC20 rear terminal assignments follow this typical architecture:
Set to 1 to initiate the automatic PID calculation cycle. The controller will oscillate the process around the SV twice to map thermal dynamics, then automatically save calculated P, I, and D parameters. 7. Troubleshooting and Error Codes
Use dedicated twisted-pair wiring to reduce electromagnetic interference. Input Sensor Wiring
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