Hybrid sequential Step Controller
The D46 hybrid sequential step controller is designed to be used where fine control accuracy is required and the heater capacity is too high to be handled economically by "FULL SCR". With a combination of a smaller SCR and a step controller, both being controlled by the same input signal the SCR stage automatically fills the gaps between the step controlled stages, thus providing fully proportional control over the entire heater range. The timing between steps is controlled with a simple jumper setting. The standard D46 accepts a single 0-10 VDC signal but may be factory set for 2-10 VDC instead. For 4-20 mA controls, a D46-4 version is available.

• 0-10 VDC, 2-10 VDC or 4-20mA depending on version
• one proportional output to control SSRs
• works with 24 VAC control voltage
• 4 ON/OFF sequential step outputs
• jumper selected time delay between steps