> Panasonic 2842 IS isolator unit for Ex detectors
> Source: https://pap.fi/en/tuote/panasonic-2842-atex-tilan-erotin-osoitteellinen/
> Full site in machine-readable form (in Finnish): https://pap.fi/llms-full.txt
> Pages in English: https://pap.fi/llms.txt

# Panasonic 2842 intrinsically safe isolator unit

Product code 41577

Intrinsically safe isolator unit for connecting the 2840 and 2841 addressable IS detectors to the COM loop of a Panasonic fire alarm control panel. Installed outside the Ex area.

-   Connects up to 20 IS detectors (2840/2841) to the COM loop
-   IS COM line up to 500 m, no return conductor or end-of-line resistor
-   IP66/67 enclosure, five cable glands included
-   Approved to EN 54-18, ATEX II (1) G \[Ex ia Ga\] IIC
-   No address or programming required

## Product description

Panasonic 2842 is an intrinsically safe (IS) isolator unit through which the 2840 addressable IS smoke detectors and 2841 IS heat detectors are connected to the COM loop of the fire alarm control panel. The isolator unit is installed outside the hazardous area, and an IS COM line runs from it into the Ex area. One or more isolator units can be connected to the same COM loop, together with other EBL system loop devices.

Up to 20 IS detectors can be connected to the IS COM line. The line is a simple radial cable without a return conductor or end-of-line resistor, and it can be up to 500 m long. The COM loop is isolated from the IS COM line by an optocoupler, and the unit’s 24 V supply is isolated from the IS line by a DC/DC converter that limits the power fed into the Ex area. The nominal voltage of the IS COM line is 16 V DC. The isolator unit requires no address or programming.

### Installation

The unit is wall-mounted outside the Ex area in a waterproof IP66/67 enclosure, supplied with five cable glands and four fixings. The connections are COM loop in and out, external 24 V DC supply (50 mA) in and out, and a blue IS COM terminal. A suitable IS COM cable is, for example, FKAR-PG 2 × 0.5 mm² (blue), and it must be routed separately from other cables.

## Technical data

- **Product code:** 41577
- **Manufacturer:** Panasonic
- **Product group:** Fire alarm systems › Field devices › Ex detectors
- **Weight:** 3100 g
- **Dimensions:** 300 × 300 × 132 mm
- **IP rating:** IP66/67
- **Operating temperature:** −10…+55 °C
- **Operating voltage:** 24 V DC (12–30 V DC), external supply
- **EN 54 approval:** EN 54-18
- **ATEX certificate:** DEKRA 11ATEX0106
- **CPR:** 0786-CPR-21785
- **Material:** Flame-retardant ABS and polycarbonate
- **Colour:** Grey
- **Storage temperature:** −25…+70 °C
- **Humidity:** Max. 95% RH, non-condensing
- **Current consumption (quiescent):** ≤ 10 mA
- **Current consumption (alarm):** ≤ 50 mA
- **Capacity:** Max. 20 IS detectors, IS COM line max. 500 m
- **ATEX zone:** Safe area (not a hazardous area)
- **ATEX classification:** II (1) G \[Ex ia Ga\] IIC
- **Mounting:** Wall mounting outside the hazardous area

## Documents

Original manufacturer documents (PDF).

### Technical datasheets

-   [Technical datasheet: 2840–2843 intrinsically safe addressable detectors](https://pap.fi/liitteet/tuotteet/en_td_2840_2841_2842_2843_mew01874_rev_11.pdf) PDF · English · 1.2 MB

### Certificates and declarations

-   [CPR certificate of constancy of performance, no. 2831-CPR-F2577, issue 02](https://pap.fi/liitteet/tuotteet/cpr_2842_2831_cpr_f2577.pdf) PDF · English · 195 kB valid until further notice
-   [CPR certificate of constancy of performance, no. 0786-CPR-21785](https://pap.fi/liitteet/tuotteet/cpr_2842_0786_cpr_21785.pdf) PDF · multilingual · 1.3 MB valid until further notice
-   [EU-type examination certificate (ATEX), no. DEKRA 11ATEX0106, issue 4](https://pap.fi/liitteet/tuotteet/dekra_2842_11atex0106_iss_4.pdf) PDF · English · 2.3 MB
-   [EU declaration of conformity, no. ESSC-F00019-11](https://pap.fi/liitteet/tuotteet/doc_2842_essc_f00019_11.pdf) PDF · English · 253 kB
-   [Declaration of performance (DoP), no. 0786-CPR-21785 (ESSC-FP0019-13)](https://pap.fi/liitteet/tuotteet/dop_2842_essc_fp0019_13.pdf) PDF · English · 138 kB