TEMPERATURE LIMITER STB 50
The STB50 safety temperature limiter is used where ever thermal processes must be monitored and the system must be transferred into a safe operational state in case of fault. If the permissible temperature limit value is reached, or if a fault occurs within the permissible temperature range on the monitoring equipment (sensor open, sensor short-circuit, failure of a component part in the device, fault in the software, failure or inadmissible value of the supply voltage etc.), the STB50 switches off without delay.
The alarm contact is activated, the LED ALARM on the front panel and the back-lighting of the display light up, and the error cause is indicated as plain text on the display. In addition, there is a 24 V DC signal present on the terminals 10-11 for an external alarm signal. Alternatively, the device can be reset using an external contact. In addition, the STB50 has a programmable analog output with up or downscaling function, as well as a precontact.
Basic technical data of STB 50:
- 1/8 DIN (96 x 48 mm), 198 mm depth
- Graphic-LCD-display, with white LCD-backlight
- Inputs RTD Pt100 or double-thermocouple
- 2 alarm outputs and retransmission output
- Useable as Limiter and Exhaust gas Limiter
- Safety Limit alarm plus separate warning
- Memory function for error message
- Certified according to DIN EN 14597 SIL2
Specification:
| Product Category: | Limit Controller |
| Dimensions and size: | 96mm x 48mm x 198mm (HxWxD), 1/8 DIN |
| Connectors: | Spring terminals 0.2...2.5 mm² (AWG 24 .. 12) |
| Primary Input Type: | RTD Pt100 or double-thermocouple |
| Output Type: | Pt100, 3-wire, -100.0…+600.0 °C Thermocouple J (Fe-CuNi), -100.0…800.0 °C K (NiCr-Ni), -150…1200 °C N (NiCrSi-NiSi), -150…1200 °C S (Pt10Rh-Pt), 0...1600 °C |
| Max. Number of Outputs: | 3 |
| Control Type: | Safety temperature limiter |
| Power Supply: | 230 VAC 115 V AC 24 V AC 24 V DC |
| Certifications: | DIN EN 14597 SIL2 |