TROLEX TX6661 Intrinsically Safe Isolating Relay Unit Instruction Manual

: June 16, 2024
: Trolex

Table of Contents

INSTRUCTION FOR USE
PRINCIPAL OPERATING FEATURES
TECHNICAL DETAILS
CONFORMITY CHECK
PRECAUTIONS
APPROVALS AND CERTIFICATION
CUSTOMERS SUPPORT
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

TROLEX TX6661 Intrinsically Safe Isolating Relay Unit

INSTRUCTION FOR USE

FOUR ISOLATING RELAYS, HOUSED IN AN EX EQ ENCLOSURE FOR INTERFACING BETWEEN EXI AND EXD CONTROL CURRENTS

PRINCIPAL OPERATING FEATURES

Four isolating relays housed in an Ex eq enclosure for interfacing between Exi and Exd control currents.

The operating coils of the relays are Intrinsically Safe and the contacts are clearance compatible for switching non-intrinsically safe apparatus or devices in separate Exd enclosures (eg. P130 pilot circuits).
The connecting terminals of the relay are Exe standard.
The relay coils can be rated for either 7.5 V dc or 12 V dc operation and each relay carries one changeover contact.
Robust stainless steel housing couples directly to standard Trolex housings using a Trolex coupling bush.

ATEXM 2 / M 1 GROUP I INTRINSICALLY SAFE

TECHNICAL DETAILS

ALL DIMENSIONS IN MM

Connections

CONFORMITY CHECK

Does the supply voltage marked on the product agree with the locally available supply?
Check that the output current rating marked on the product is adequate for the total current demand of the system being installed.
Ensure that the Power Supply certification details are fully compliant with the monitoring system requirements.
If in any doubt, please contact the Trolex Sales department.

OPTIONS AVAILABLE

TX6661 INTRINSICALLY SAFE ISOLATING RELAY UNIT (Ex eq)
Input Voltage Options:
7.5 V dc Exi (.109)
12 V dc Exi (.101)

PRECAUTIONS

Ensure that all covers on Exe housings and their fixing devices are properly secured in compliance with statutory regulations before switching on the input supply.
Never remove the cover of an Exe housing whilst the input supply is connected. Isolate elsewhere before removing the cover in accordance with statutory regulations.
The housing of all power supplies must be securely earthed in compliance with statutory regulations.
Ensure that the installation of the isolating relay unit, particularly with regard to the connecting cables, complies with the certification parameters (section 6).
The Exe housing must be inspected and maintained regularly in accordance with statutory regulations.
All cables entering the non I.S. output terminal chamber must be terminated with suitable, certified cable entry devices.
Do not drill holes in the Exe housing or modify it in any way.
This enclosure is permanently sealed and repair is not permitted. Please return to Trolex for repair.

APPROVALS AND CERTIFICATION

Certification

The TX6661 Isolating Relay Unit is designed and approved meet the
ATEX directive (94/9/EC).
Sira 02ATEX3420X I M2 Ex eq I Mb

Safety description: I.S terminals 3, 5, 7, 9 wrt 0 V Relay contact terminals a, b and c Relays 1-4 Ui = 13.0 V (for the 12 V relays) Um = 375 V peak Ui = 8.5 V (for the 9 V relays) Ii = 5 A

Electro Magnetic Compatibility

The TX6661 Isolating Relay Unit is designed and tested to meet the requirements of the EMC directive (2004/108/EC).

Low Voltage

The TX6661 Isolating Relay Unit is designed and tested to meet the requirements of the Low Voltage directive (73/23/EC).

Specific Conditions of Use

All cables used for external connections shall be made by the use of suitably certified Ex e cable glands. The use of conduit is not permitted.