1. INTRODUCTION The DVC100 (M) MK2 Termination Unit is an ATEX Certified junction box that provides a signal connection point for the Honeywell Analytics Searchpoint Optima and Searchline Excel range of gas detectors and the associated field wiring, and a mounting point for the Searchline Optima and Optima Plus detectors.
WARNINGS 1. The DVC100 (M) MK2 Termination Unit is certified for and intended for use in potentially hazardous areas. Install and use the DVC100 (M) MK2 Termination Unit in accordance with the latest regulations. No modifications to the unit is permitted without reference to the relevant certifying authority 2. In Europe install to comply with EN 60079-14 3.
3. MAIN FEATURES This section identifies the main features of the Termination Unit and also details important dimensions for the unit when installing. Optima Plus M20 Blanking Plug M20 Blanking Plug Handheld Interrogator Socket...
4. INSTALLATION It is important before starting these procedures that the detailed information provided in the DX/DVC100 Series Termination Units Technical Handbook about DVC100 (M) MK2 installation has been carefully considered at the planning stage. The following points should be noted.
INSTALLATION (CONT) With Searchpoint Optima This procedure describes how the DVC100 (M) MK2 is installed at the mounting location and then the Optima gas detector is fitted to the Termination Unit. (1) Securely fit the Termination Unit at the required monitoring point.
INSTALLATION (CONT) With Searchline Excel The DVC100 (M) MK2 is fitted to the Excel receiver’s mounting plate and then the units are wired. (1) Securely fit the Termination Unit to the mounting plate so that the communications link entry socket connector is located at the bottom.
INSTALLATION (CONT) With Searchline Excel Cross-Duct The DVC100 (M) is fitted to the Cross-Duct mounting plate and then the units are wired. (1) Securely fit the Termination Unit to the mounting plate so that the communications link entry socket connector is located at the bottom. Use the mounting holes marked G on the diagram below.
INSTALLATION (CONT) Electrical Installation Guidelines Isolate all associated power supplies and ensure that they remain OFF during the procedures. Ensure that approved and certified cable glands have been fitted to the Termination Unit cable entries where used for field wiring, with sealing washers where necessary to maintain the ingress protection rating.
INSTALLATION (CONT) Searchpoint Optima Terminal Gas Detector Wiring Field Wiring Number Function Colour +24V +24VDC SUPPLY Black 0V - Supply RS485 (A) Orange RS485 (B) Blue Modbus Drain Modbus A Modbus B Earth Terminal Earth Green / Yellow Earth / Barrier Earth...
INSTALLATION (CONT) Searchpoint Excel Cross-Duct Terminal Gas Detector Wiring Field Wiring Number Function Colour Receiver / Transmitter +24VDC SUPPLY +24V Rec & Transmitter 0V - Supply Black Rec & Transmitter 4-20mA Output 4-20mA White Receiver Only RS485 A Orange Receiver Only RS485 B Blue Receiver Only...
INSTALLATION (CONT) Searchpoint Excel Terminal Gas Detector Wiring Field Wiring Number Function Colour +24VDC SUPPLY +24V 0V - Supply Black 4-20mA Output 4-20mA White RS485 A Orange RS485 B Blue Modbus Drain Modbus A Modbus B Earth Earth Green / Earth / Barrier Terminal Yellow...
CERTIFICATION (Cont) System Connections...
Inputs One of the following: Searchpoint Optima Searchpoint Optima Plus Searchline Excel Searchline Excel Cross-Duct and field wiring Outputs IS protected Honeywell Analytics SHC1 Handheld Interrogator communications (RS485) 4-20mA (Non-isolated) Digital Interface Use the Modbus RTU communications ® protocol Power Supply 19-32VDC.
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