Environmental Monitoring Solutions
Thanks to its free configurability, the HT 55 is a universal controller in machine, system and apparatus applications. In the design of this device, particular attention was paid to making its handling simple and comprehensible. Mounting on standard rails and the removable terminals (plug-in blocks) guarantee use even under difficult installation conditions in the switchgear cabinet.
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BENEFITS
FEATURES
| Voltage supply | 230 Volt AC / 50 Hz or 24 Volt DC 115 Volt AC / 50 – 60 Hz optional |
| Sensor types | Fe-CuNi (J), NiCr-Ni (K) PT100 NI-120, sensor breakage protection, sensor polarity control, short-circuit monitoring |
| Tolerance | 1 % of the relative temperature |
| Actual/target value display | 3-digit LED display (13 mm) scan operation between channel 1 and 2 |
| Measuring range | 0 – 250 °C units |
| Controller output A | via 2 internal triacs max. power 1200 W for both channels together |
| Controller output B | via two mechan. changeover relays, switching power 2 x 1500 W at 230 V AC |
| Controller output C | 2 x 12 V DC to control a solid state relay to switch higher powers |
| Configuration | as dual controller, each channel is configured as a controller / limiter each channel monitors the other |
| Optional | two independent 4 – 20 mA inputs for external setting of setpoint |
| Protection type | IP40 (EN 60529), protection class I |
| Controller dimensions | 72 x 70 x 90 mm (H x W x D) |
| Connections | pluggable connection terminals |
| Operation | parameter assignment and configuration using keypad |
| Special functions | self-optimization of controller parameters for fast adaptation to environmental conditions. Safety operation mode by connecting the relays before the triac control to switch off fault alarm. Setpoint limitation and setpoint correction adjustable. Attachment on 35 x 7.5 mm rail according to DIN 50022 |
| Installation housing for HT 55 | |
| Housing dimensions HZ-EK 2 | for 1 unit 125 x 200 x 122 mm |
| Housing dimensions HZ-EK 4 | for 2 units 200 x 200 x 122 mm |
| Housing dimensions HZ-EK 6 | for 3 units 250 x 200 x 122 mm |
| HT 55 protection type | IP40 (EN 60529) without housing IP65 (EN 60529) in installation housing |
| Design | in accordance with VDE 0631 |
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