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Toptech MultiLoad II EXL User Manual

Toptech MultiLoad II EXL
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CHAPTER 3 INSTALLING THE MULTILOAD II/RCUII EXL
19 MultiLoad II/ RCU II Explosion Proof Lite (EXL) Installation Guide - Part # 6070
Chapter 3 Installing the MultiLoad II/RCUII EXL
Tools Required
Installation
- -8 mm hex wrench required for tightening cover bolts.
Servicing and Repair
- #2 Philips screwdriver for circuit board removal.
- ¼” socket wrench for CPU circuit board removal and a 5/16” socket wrench for display board
removal.
- - Torx T10 for removal of keypad bezel security screws.
Cover Closure and Bolt Replacement
The enclosure cover is secured to the housing by twenty 10mm hex cap screws. An 8mm Allen head
wrench is required to remove the screws. After the bolts are removed, the front cover will swing left
and hang from its hinges. To close the cover, gently lift on the bottom right corner when in position and
start one or two of the lower right corner bolts. This is done to assist in alignment of the cover and base
holes for starting the bolts. Dry stainless steel fasteners can gall or seize in aluminum, so please be
sure to use a petrolatum or a similar lubricant.
Be sure to keep the flanges clean and free of scratches so as not to compromise the quenching
ability of the flame path.
All cover bolts must be tightened to maintain the explosion proof capability of the enclosure.

Table of Contents

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Toptech MultiLoad II EXL Specifications

General IconGeneral
BrandToptech
ModelMultiLoad II EXL
CategoryController
LanguageEnglish

Summary

Chapter 1 General Information & Warnings

Safety Warnings

Critical safety precautions for North American and ATEX/IECEX hazardous locations.

Electrostatic Discharge (ESD) Protection

Guidelines for handling components to prevent damage from electrostatic discharge.

Chapter 2 Operating Conditions and Components

Operating Characteristics

Key operational specifications and electrical ratings for internal I/O options.

Chapter 3 Installing the MultiLoad II/RCUII EXL

Mounting the DIV-2 Enclosure

Guidelines and suggestions for mounting the EXL enclosure on various surfaces.

Electrical Supply Connections

Instructions for connecting AC and DC power supplies, including cable gland details.

Chapter 4 Data Communications Interface

Communications Protocols and Wire Specs

Details on RS-422/485 and RS-232 protocols, including wire requirements.

Communication Connection Wiring

Wiring connections for specific communication protocols like FCM.

Host/TMS Communications

Methods for connecting host/TMS computer systems via various communication ports.

Host Ticket Printer/Data Logger Connections

Connection options for ticket printers and data loggers via RS232 or Ethernet.

Chapter 5 Connecting Field Devices to the I/O Board

Available I/O Points per Board

Quantities and electrical ratings of I/O points for Digital/Analog and 2 Meter I/O boards.

Terminal Arrangements per Board

Terminal block assignments for the Digital/Analog I/O Board (IO_DA).

How to Connect and Wire Field Devices

Examples of wiring common field devices to the I/O boards.

Flow Meter and Control Valve Wiring

Wiring diagrams for connecting flow meters and control valves.

Additive Wiring: Outputs

Diagrams for connecting additive injection outputs to the I/O board.

Chapter 6 Configurations

Switch Access Control

Details on switches that limit access to program mode and W&M parameters.

Verifying Communications

Steps to verify communication between MultiLoad II/RCU II and the I/O board.

Chapter 7 Service and Repair

CPU Subassembly Removal and Replacement

Procedure for removing and replacing the CPU chassis, boards, and optional I/O board.

Display Subassembly Removal and Replacement

Procedure for removing and replacing the display module and its associated cables.

Keypad Removal and Replacement

Procedure for removing and installing the unit keypad and bezel.

Keypad Barrier Removal and Replacement

Procedures for removing and replacing keypad barrier versions 1.1 and 2.0.

Card Reader Removal and Replacement

Procedure for removing and installing the EXL Prox Card Reader.

W&M Switch Assembly Removal and Replacement

Procedure for replacing the W&M switch assembly.

Chapter 8 Hardware Revision History & Compatibility

Chapter 9 Revision History

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