Overview - Honeywell DVC100 (M) MK2 Installation Manual

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.
It also provides a digital interface between the attached gas detector and an
RS485 link to the network controller.
Note: Gas detector digital address configuration information is not provided here but in
the DX/DVC100 Series Termination Units Technical Handbook.
This guide covers the basic on-site mechanical and electrical
installation of the unit. Refer to the DVC100 Series Termination Units
Technical Handbook (Part No:2104M0701) for more detailed information about the
DVC100(M) MK2.
The unit is ATEX certified and is intended for use in hazardous areas.
The DVC100 (M) MK2 provides:
• terminals for connecting the gas detector and the field cabling
• an Intrinsically Safe (IS) connection point for the Honeywell Analytics
Hand Held Interrogator (SHC1)
• a local mounting point for the Searchpoint Optima or Optima Plus
gas detector
The unit features:
• three cable entries
• one 12-way terminal block
• a voltage clamp and a communications link entry socket
When used with an Optima or Optima Plus, the large (M25) entry is used to mount
the gas detector directly to the box. All types of attached gas detector output a
4-20mA signal that is sent via the Termination Unit and field wiring back to the
system controller.
The voltage clamp and the external socket provide the IS connection to the
Honeywell Analytics Handheld Interrogator (SHC1).
The SHC1 allows the operator to communicate with the attached gas
detector to commission, calibrate or diagnose the system. Full details about the
Optima and Excel types of gas detector can be found in their respective
technical documents, which include operation of the SHC1.
Caution: Only the Honeywell Analytics SHC1 Handheld Interrogator should be
connected to the DVC 100 (M) MK2 communication link entry socket.
Honeywell Analytics reserve the right to change or revise the information supplied
in this document without notice and without obligation to notify any person or
organisation of such revision or change. If further details are required that do not
appear in this document contact Honeywell Analytics or one of its agents.
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