Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Instruction Manual - Manual (Page 45)

2.5 MOUNTING THE INTERCONNECTION TERMINAL BOARDS (ITBs)
The Interconnection Terminal Boards (ITBs) (and SCADA Adapter) are designed for snap-mounting
into non-conductive, 2.9 inch (74 mm) wide PVC track that is either direct surface mounted (wall
mounted) or mounted on DIN rail (32 or 35 mm) with adapters. The 2.9 inch (74 mm) wide PVC
track is available from MicroMod Automation in 4 foot (1.2 m) lengths as part number 129A003U03 for
wall mounting and for DIN rail mounting. To mount the PVC tracks on either the 32 mm or 35 mm
DIN rails, order kit part number 614B958U02, which contains 12 DIN Adapters. DIN rails are NOT
available from MicroMod Automation and must be purchased locally.
As shown in Figure 2-6, the elongated mounting holes for the PVC track are centered 2 inches
(50.8 mm) apart, as well as the two parallel rows of adapter holes. The track can be mounted di-
rectly to the wall with screws through the elongated holes or it can be mounted on 32 mm or
35 mm DIN rail with DIN Adapters that are inserted into the adapter holes. It is not necessary to
snap all 12 adapters into a single 4 foot PVC track section.
The ITBs (and SCADA Adapter) are not provided with an enclosure. They may be mounted within
a user provided enclosure as protection against environmental hazards and mechanical damage,
and to provide operating personnel with suitable protection from electrical shock.
WARNING
The MicroMod Interconnection Terminal Boards (ITBs) and
SCADA Adapter, when properly installed in the non-conductive, 2.9 inch
(74 mm) wide PVC track snap-mount channels, comply with ANSI/ISA,
UL, CSA, and IEC safety requirements with respect to accessibility to a
potential shock hazard when installed in a service access area that can
only be accessed, by use of tool, by qualified service personnel. It is
the user’s responsibility to provide supplementary protection against
accidental contact with the ITBs and SCADA Adapter mounted in an
operator access area where access can be gained without the
use of a tool.
When snap-mounted, the boards can be mounted horizontally or vertically and there is no pre-
ferred mounting order. A 1/2 inch (12.7 mm) edge gap between boards is preferred for easier snap-
insertion and removal from the track. The minimum required above board clearance is 3
inches (76.2 mm) for connector cable bends, although 7 inches (177.8 mm) is preferred to allow ac-
cess space above the track surface.
As a PVC track installation overview, Figure 2-7 is provided to illustrate a close-up view of the con-
troller rear terminal connections available for the ITBs. Figures 2-8 and 2-9 are also provided to
summarize the various possible ITB-to-controller connections for controllers with the Standard
Rear Terminal Board and Cord Set Connector Board. The ITBs shown in these illustrations are the
SCADA Adapter, Communication (Comm) ITB, HART ITB, HART Modem ITB, Analog ITB, 6 Digital
Input/4 Digital Output (6DI/4DO) ITB, Dual Relay ITB, 16 Digital Input/Digital Output (16DI/DO)
ITB, and Cord Set ITB.
53MC5000 Process Control Station
2-6