Crowcon Sensitron PL4+D Gas Control Unit
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Crowcon Sensitron PL4+D Gas Control Unit
PL4+D, for DIN-rail mounting, is an innovative gas control unit ideal for small plants with up to 12 detectors.
Monitor four gas detectors connected directly to the control panel (4-20mA) and an additional 8 detectors via remote 8-input cards STG/IN8S. Every input can be configured for a different kind of gas to detect both flammable and toxic compounds, refrigerant gases, and Oxygen depletion or enrichment.
The panel can manage 5 output relays aboard the panel and an additional 32 via STG/OUT16S+STG/8REL.
The backlit LCD display assures a precise indication of the measured gas concentration and alarm set points. Mode status LEDs visually indicate alarm levels, fault and power-on. An internal buzzer is provided for an audible alarm in case of alarm or fault.
Order Information
| Part Number | Description |
|---|---|
| STPL4+ | 4 channel triple threshold DIN rail control panel |
| STPL4+D | 4 channel triple threshold DIN rail control panel with expansion capability. Supports additional 8 inputs via STG/IN8S or RS485 bus connection. Includes 1 USB port for PC connection. Power supply: 24 Vdc |
| STG/IN4-OUT4-S1 | Remote module with 4 inputs (4-20mA) and 4 output relays for MULTISCAN |
| STG/IN8S | High-safety 8-input remote module with improved performance |
| STG/OUT16S | High-safety 16-output remote module (Open collector type) with improved performance |
| STG/8REL | Plug and play relay board for STG/OUT16 to provide 8 relay outputs |
| AL09 | 24 Vdc power supply for STPL4+D & STMTS/RTU |
| STG/IPBOX | IP65 ABS enclosure box for STPL4+D & STMTS/RTU |
| Electrical data | |
| Power supply | 12 -24 Vdc |
| Inputs |
4 analogue 4-20mA inputs, up to 12 by using the optional
modules: IN4-OUT4: addition of 4 analogue inputs IN8S: addition of 8 analogue inputs |
| Outputs |
5 relays: 1 associated to fault, 4 programmable Up to further 32 outputs can be added: IN4-OUT4: addition of 4 relays OUT16: addition of 16 O/C outputs (convertible into relays with the 8REL module) |
| Serial ports |
1 x RS485 for field installation 1 x USB for programming, supervision and firmware updating |
| Communication protocol | Galileo or Modbus |
| Absorption | 100 mA at 24 Vdc (without connected loads) |
| Relays contact ratings |
10A at 250V relays of panel board 16A at 250V relays of IN4-OUT4 module and 8REL module |
| Functionalities | |
| Programming | Configuration with Sensitron software |
| Operating levels | 3, with numerical password customizable |
| Set / Unset detectors | Possibility of unset one or more channels for field maintenance |
| Test | Possibility of channels test field |
| Supervision | Efficient Modbus protocol for system supervision |
| Event log | The event log can be visualised from the gas panel or by the software |
| Date and time | Internal clock with backup to keep the date and time even after a shutdown |
| Visual indications |
LCD display 4raws x 16columns 10 status LEDs |
| Acoustic indications | Buzzer 60 dB at 1m |
| Front panel buttons | Keypad with 4 shift buttons and ENTER button |
| Environmental conditions | |
| Storage temperature | -20 / +60°C |
| Operating temperature | 0 / +50°C |
| Operating humidity | 15 / 85% RH non condensing |
| Box | |
| Material | ABS |
| Dimensions |
9 DIN module (158.5 x 90.0 x 60.0 mm) |
| Weight | 400 g |
| IP Grade | – |
| Compliance | |
| EMC | EN 61000-6-3:2007 + A1:2011; EN 50270:2015 |
| ATEX |
ATEX Directive 2014/34/UE EN IEC 60079-0:2018 EN 60079-29-1:2016 |
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