Plum INT-S3 User Manual

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Name: Interface / Ex barrier
Type: INT-S3 | INT-S3/N
Installation manual
Document issue: 3.1 / 06-2023
Implicitly read the user manual, which contain all necessary information about
appliance, including safety information. This is only a supporting document, which
includes only selected information, useful during device installation. Installation
manual is only an annex to the main document.
User manual along with information regarding safety and a template of EU conformity
declaration is available on website https://gas.plummac.com/en/ after logging into your
Client Panel (link in QR code) under INT-S3 section.
SAFETY
INT-S3 and INT-S3/N are partially intrinsically safe, explosion proof devices and it can be installed only
outside of hazardous explosion zone of gases and vapors. Ex marking II (2)G [Ex ib Gb] IIA. Devices are
designed to cooperate with device installed inside explosion hazard areas and its installation must comply
with requirements of applicable regulations.
Installation of intrinsically safe circuits must fulfill requirements of standard EN 60079-25:2010.
Grounding of the interface – terminal no. 3 connect to earth bar in telemetric cabinet using wire minimum
1,5mm
2
cross-section. In case of possibility of appearing more than 30V voltage in circuits, terminal no. 9
connect to earth grounding using wire minimum 4mm
2
cross-section.
Ex cables must be passed separately to the non-Ex cables. Wiring must meet the requirements of EN 60079-
14 ch. 12.2.2.8: wires insulation should withstand 500V DC attempt voltage, and it can not be thinner than
0,1mm (for polyethylene insulation 0,2mm).
Wires and cables of Ex circuits should be rigidly placed and secured from mechanical factors.
LIYCY type cables for intrinsically safe circuits are highly reccomended. Option for usage in intrinsically safe
circuits – blue insulation.
Permissible cable lengths: RS485 Ex – 150m for LIYCY 6x0,5mm
2
or 100m for LIYCY 6x0,34mm
2
Shielding of RS485 Ex cable connect to the SHIELD terminal, and the earth grounding. INT-S3 shielding has
to be separated from housing of connected EVC or other devices, to prevent grounding loops appearing.
For longer than 30 meters connections it is reccomended to ground the shield cable using surge protection
device placed as close as possible to connected device, but not inside the explosive hazardous zone.
Do not install the interface in vincinity of strong electrical or magnetic fields.
TECHNICAL PARAMETERS
Ex marking II (2)G [Ex ib Gb] IIA
Data
transmission
Intrinsically safe circuits – RS485 Ex
Standard circuits – RS485
Baud rate 9600 - 115200b/s or 1200 – 4800b/s
Housing
protection class
IP40
Signals
separation
Z1, Z2 terminals – intrinsically safe circuits –
marked with blue
Z3, Z4 terminals – standard circuits – marked
with black
Input voltage 10,5÷30V DC Assembly DIN rail (TS35)
Output voltage
INT-S3: U
OUT
=~5,7V
INT-S3/N U
OUT
=~7,6V
Inputs /
Outputs
Two separated digital inputs/outputs
Outputs are OC type, maximum load – up to
200mA
QR code link:

Plum INT-S3 Specifications

General

Brand	Plum
Model	INT-S3
Category	Recording Equipment
Language	English

Summary

Safety Precautions

Intrinsically Safe Circuit Installation

Installation of intrinsically safe circuits must fulfill requirements of standard EN 60079-25:2010.

Grounding and Earth Connections

Grounding of the interface - terminal no. 3 connect to earth bar, terminal no. 9 connect to earth grounding.

Ex Cable Management and Wiring

Ex cables must be passed separately to non-Ex cables. Wiring must meet EN 60079-14 ch. 12.2.2.8.

Cable Securing and Protection

Wires and cables of Ex circuits should be rigidly placed and secured from mechanical factors.

Recommended Cable Types

LIYCY type cables for intrinsically safe circuits are highly recommended, option for blue insulation.

RS485 Ex Cable Length Limits

Permissible cable lengths: RS485 Ex – 150m for LIYCY 6x0,5mm² or 100m for LIYCY 6x0,34mm².

RS485 Ex Cable Shielding

Shielding of RS485 Ex cable connect to SHIELD terminal and earth grounding. Avoid grounding loops.

Shield Grounding for Long Connections

For longer than 30 meters, ground shield cable using surge protection device, not in explosive zone.

Environmental Field Interference

Do not install the interface in vicinity of strong electrical or magnetic fields.

Technical Parameters

Ex Marking and Protection Class

Device Ex marking is II (2)G [Ex ib Gb] IIA. Housing protection class is IP40.

Input and Output Voltage

Input voltage range 10.5-30V DC. Output voltage is ~5.7V (INT-S3) or ~7.6V (INT-S3/N).

Data Transmission and Signals

Supports RS485 Ex and RS485. Baud rate 9600-115200b/s. Intrinsically safe circuits Z1, Z2; standard circuits Z3, Z4.

Assembly and Outputs

Assembled on DIN rail (TS35). Outputs are OC type, max load up to 200mA.

Device Description and Usage

INT-S3 Application

INT-S3 is for power supply (5.7V) in Ex zone, or Ex barrier for RS485 and Digital Outputs.

INT-S3/N Application

INT-S3/N is for power supply (7.6V) in Ex zone, or Ex barrier for RS485 and Digital Outputs.

INT-S3/N Specific Usage

INT-S3/N cannot be main power supply for MacBAT 5/MacREJ 5; only as Ex barrier for RS485/Digital Outputs.

Connection Diagram and Support

Connection Diagram

Diagram shows INT-S3 connection with MacBAT 5 / MacREJ 5, including RS485 Ex and RS485 ports.

Technical Support Information

Contact details for Technical Support Department and company information.