Apollo XP95 I.S. Protocol Translator
Summary
The XP95 Intrinsically Safe (I.S.) Protocol Translator is a loop-powered device designed to ensure the integrity of communication between control equipment and field devices in intrinsically safe applications. Installed in the safe area before the safety barrier, the translator requires no I.S. certification and falls within the generic description ‘Safe Area Apparatus’.
Drawing minimal quiescent current, the translator operates transparently to both the loop driver and I.S. detectors whilst regulating DC levels and regenerating protocol pulses. The device is housed in a moulded plastic enclosure that can be either clipped onto a standard 35mm DIN-Rail (DIN 46277) or panel mounted using pull-out latches in the base.
Available in single-channel and dual-channel versions, each channel should only be connected to a single intrinsically safe circuit through an appropriate safety barrier. The translator is compatible with both XP95 and Discovery addressable fire detection systems, making it a versatile solution for hazardous area fire detection installations.
Features
- Loop-powered device with low quiescent current draw (1.0mA max single channel, 2.0mA max dual channel)
- XP95 and Discovery protocol compatible
- Available in single-channel (55000-855) and dual-channel (55000-856) versions
- Transparent operation to loop driver and I.S. detectors
- DIN-Rail (35mm) or panel mounting options
- Individual current limiting on each channel
- Two wire supply, polarity sensitive
- Wide operating temperature range from -20°C to +60°C
- Compact dimensions (92.5mm x 110mm x 20mm)
- Certified to CPR, LPCB, MED, LR, DNV-GL, ABS and KRS standards
- Voltage pulse sensing and regeneration
- Current pulse boosting for I.S. device responses
FAQ
What is the XP95 I.S. Protocol Translator used for?
The XP95 I.S. Protocol Translator is used to maintain communication integrity between control equipment and intrinsically safe fire detection devices in hazardous areas. It is installed in the safe area before the safety barrier and ensures protocol signals are correctly transmitted to and from I.S. detectors.
Does the translator require intrinsically safe certification?
No, the translator does not require I.S. certification as it is installed in the safe area before the safety barrier. It falls within the generic description ‘Safe Area Apparatus’.
What fire detection systems is the translator compatible with?
The translator is compatible with both XP95 and Discovery addressable fire detection systems from Apollo.
Can I use both channels on the dual-channel translator with different loops?
No, the loop input and the negative side of the output are common to both channels in the dual-channel unit. Therefore, both channels must be connected to the same loop, though their outputs are individually current-limited.
How is the translator mounted?
The translator can be either clipped onto a standard 35mm DIN-Rail (DIN 46277) or panel mounted using the pull-out latches in the base of the moulded plastic enclosure.
What happens if there is a short-circuit on the barrier output?
Each channel incorporates a separate current limiting circuit that limits the maximum peak output current. This ensures that any safety barrier fuses are not blown in the event of a short-circuit on the barrier output.
Specifications
- Supply Wiring: Two wire supply, polarity sensitive
- Supply Voltage: 19V – 28V DC
- Digital Communication: XP95 and Discovery compatible
- Modulation Voltage At Translator: 5V to 9V peak to peak
- Input Current (No Load Condition): 1.0mA max (single channel), 2.0mA max (dual channel)
- Output Voltage (To Barrier): 16.5V – 19V
- Output Modulation Voltage (To Barrier): 5V to 7V
- Output Current (To Barrier): 0.2 to 30mA
- Output Pulse Current (Drawn From Loop): 16 to 23mA
- Operating Temperature: -20°C to +60°C
- Humidity (No Icing Or Condensation): 10 to 95% relative humidity
- Standards And Approvals: CPR, LPCB, MED, LR, DNV-GL, ABS, KRS
- Dimensions: 92.5mm x 110mm x 20mm
- Weight: 100g
- Part Number (Single Channel): 55000-855
- Part Number (Dual Channel): 55000-856
Downloads
- Datasheet (Adobe PDF)
Additional information
| Channels | Single, Dual |
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