The fan timer relay was designed especially for controlling two-level motors. Response and switch-off delay can be adjusted separately and infinitely. A two-level switch is used for activation. The motor contactors are activated by two mutually blocking outputs. Mode of operation:
- 1. If you directly select level 2, level 1 is first activated for the adjusted start-up time so that the fan can accelerate to nominal speed. Then level 2 is activated.
- 2. When switching from level 2 back to level 1 or switching off, a switch-off delay is activated allowing the fan to run down before level 1 is activated.
- 3. If level 1 has been activated for minimum the adjusted start-up time, it is immediately switched to level 2. When switching from level 1 to 2, the interruption may be max. 250 ms. If this time is exceeded, the procedure is as described under point 1.
Resources
Specifications
General Data | Operating voltage (AC/DC) | 24 V AC/DC |
| Recovery time | approx. 20 ms |
| Output / voltage | Operating voltage |
| Output / max. current | 6 A AC1 / 1.5 A AC3 |
| Response time for level 1 | 0 ms |
| Response time for level 2 | approx. 30 ms |
| Start-up delay | adjustable time of up to 30 s |
| Switch-off delay | adjustable time of up to 60 s |
| Dimensions (W x H x D) | 22.5 x 75 x 95 mm |
| Weight | 150 g |
| Operating temperature range | -5 °C to 55 °C |
| Storage temperature range | -20 °C to 70 °C |
| Ingress protection for housing / terminal block | IP40 / IP20 |
