Gefran 1550 Controller – Programmer
The Gefran 1550 is a single-loop PID controller, 48×96 mm (1/8 DIN), 80 mm depth, designed for local temperature or process control in panel door installations. The front panel features an LCD display for PV/SV, an F display for parameter access and diagnostics, a bargraph for power/current/valve position, and a removable front for front-side maintenance.
Process Inputs
Primary input supports thermocouples J, K, R, S, T, C, D, RTD Pt100/JPT100, infrared sensors, and linear signals (0–60 mV, 0–1 V, 0–5 V, 0–10 V, 0/4–20 mA). Sampling time is selectable at 60 or 120 ms, with a range of -1999 to 9999 and adjustable digital filtering. Additional inputs include remote setpoint (0–1 V, 0–10 V, 0/4–20 mA) and CT input x/50 mAac for load monitoring.
Outputs and Control
Output options: relay (up to 4 NO contacts, 5 A / 250 Vac), logic 24 V for SSR, triac (75–264 Vac / 1 A), continuous 4–20 mA, or analog retransmission (0–10 V, 0–20 mA, 4–20 mA). Supports PID, ON/OFF, heat, cool, heat/cool, and open/close control for floating motorized valves via relay, SSR, or triac.
Programming and Diagnostics
Setpoint programmer supports up to 4 programs and 12 steps, with setpoint, ramp time, and hold time per step. Up to 4 consents, 4 events, 4 selectable setpoints, 16 logic function blocks, and timer functions are available. Diagnostics include LBA, HB, SSR alarm, and energy counter with calculation from nominal power or current via CT.
Typical Applications
- Ovens, dryers, thermal zones
- Extruders, injection moulding, heated moulds
- Resistive loads with SSR, contactor, or triac
- Heating/cooling loops with remote setpoint
- Motorized valves in thermal or cooling loops
Operating Conditions and Standards
Power supply: 100–240 Vac/Vdc ±10%, optional 20–27 Vac/Vdc. Operating temperature: -10 to +55 °C. Front panel: IP65. Installation category II, pollution degree 2. Compliance: EMC 2014/30/EU (EN 61326-1), LVD 2014/35/EU (EN 61010-1), UL listed for process control equipment.