4
IM 689-2
Introduction
The MicroTech® BACdrop™ gateway integrates a MicroTech network into a BACnet™ building
automation system (BAS) so that you can monitor and control McQuay International equipment from
the BAS. The gateway translates between BACnet objects on an Ethernet® network and McQuay
memory locations on a proprietary MicroTech network.
Each BACdrop gateway can support up to 63 MicroTech controllers. No modifications to MicroTech
hardware or software are necessary. Most standard MicroTech unit and supervisory control
applications are supported (see Table 1).
This manual describes BACdrop components, field-wiring requirements, commissioning procedures,
and service procedures. Point mapping information for standard MicroTech control applications is
provided in a separate series of BACnet Data Information Packet (BDIP) documents. In addition to
point mapping data, the BDIP documents include references to MicroTech unit controller installation
and operation literature that may be needed to engineer a BAS application. Two BACnet Protocol
Implementation Conformance Statement (PICS) documents are also available. See Table 1 below.
All BACdrop-related literature is available to the public through the McQuay International bulletin
board system called McQuay OnLine. The latest BACdrop software updates are also made available
(at no charge) through McQuay OnLine. For access to McQuay OnLine, contact the McQuay
Controls group in Minneapolis.
Table 1. Related BACdrop Literature
Description
Document
BDIP for MicroTech air-cooled screw chiller applications (type ALS)
BD 01
BDIP for MicroTech water cooled screw chiller applications (types WHS, PFS-B, PFS-C)
BD 02
BDIP for MicroTech scroll chiller applications (type AGZ)
BD 03
BDIP for MicroTech large-tonnage water cooled screw chiller applications (type PES with J&E Hall
compressor)
BD 04
BDIP for MicroTech series-100 centrifugal chiller applications; includes MicroTech Lead-Lag/Load
Balance (LLLB) controller
BD 05
BDIP for MicroTech series-200 centrifugal chiller applications
BD 06
BDIP for MicroTech reciprocating chiller applications (U.S. models only)
BD 07
BDIP for MicroTech self-contained air conditioning applications
BD 08
BDIP for MicroTech applied rooftop system applications
BD 09
BDIP for MicroTech unit ventilator applications
BD 10
BDIP for MicroTech Remote Monitoring and Sequencing Panel (RMS)
BD 11
BDIP for MicroTech Remote Monitoring and Control Panel (RMC)
BD 12
BDIP for MicroTech Chiller System Controller Panel (CSC)
BD 13
PICS for BACdrop gateway
PICS-BAC
PICS for MicroTech virtual BACnet controllers
PICS-MT
!
WARNING
Electric shock hazard. Can cause personal injury or equipment damage.
This equipment must be properly grounded. Connections and service to the MicroTech control
panel must be performed only by personnel that are knowledgeable in the operation of the
equipment being controlled.
!
CAUTION
Static sensitive components. Can cause equipment damage.
Discharge any static electrical charge by touching the bare metal inside the control panel before
performing any service work. Never unplug cables, circuit board terminal blocks, or power plugs
while power is applied to the panel.
