Electricity + Control January 2016

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ROUND UP
Equipment supplied to chrome recovery plant
Local firmJB Switchgear Solutions was recently awarded a multi-million Rand contract for the
design, manufacture and supply of motor control centres and VSD panels destined for Anglo
American Platinum’s Amandelbult Chrome recovery plant.The Chrome Recovery Plant (CRP)
will be installed prior to the secondary circuit, Mainstream Inert Grinding (MIG) process and
scavenger flotation.The new CRP will be of a modular design consisting of twin modules of
spiral concentrators, employing a multi-stage configuration of separators and spirals. Once
the chromite’s been extracted, the concentrate will be redirected to the platinum benefication
plant for further processing.The project is located within Rustenburg Platinum Mine’s mining
right area 25 km south of the town ofThabazimbi in the Limpopo Province.The chrome recovery
plant will comprise twomodules, with the combined capacity of 250 kilotons per month and will
each be approximately 30 m x 30 m in size. Each chromite recovery module will comprise feed
systems, thickeners, cyclones and spirals. JB Switchgear is supplying six ‘Eagle’ series motor
control centres, and robust, reliable and user-friendly design well suited for this application.
Starter sizes vary between 1,1 kW and 45 kW.The operational voltage is 550V with a prospec-
tive fault level of 50 kA. In addition to the MCCs, JB Switchgear also supplied 52 VSD panels
ranging from 0,25 kW to 220 kW.The communication protocol for this project is ‘Profibus’.
Enquiries: Johan Basson.Tel. 11 027 5804 or email
or visit
Easy monitoring of
mechanical components
Siemens has developed the Siplus CMS1200
Condition Monitoring System to monitor
mechanical components. It is an expansion
module for the S7-1200 controller that is based
on the SM 1281 ConditionMonitoringModule.
The user creates an efficient monitoring system
by combining up to seven SM 1281 modules,
to each of which four vibration acceleration
sensors and one speed measurement sensor
can be connected.This system can be used for
continuous monitoring of mechanical com-
ponents such as motors, generators, pumps
and fans. When Siplus CMS1200 is used for
predictive maintenance, significant changes
as a result of wear, for example, can conse-
quently be detected at an early stage, enabling
maintenance activities to be better planned and
carried out on schedule. By means of the TIA
Portal (Totally IntegratedAutomation) engineer-
ing framework, the Siplus CMS1200 Condition
Monitoring System is readily integrated into
an automation group containing HMI (human
machine interface) devices, controls and mo-
tion control components.
Enquiries: Email
DRIVES, MOTORS + SWITCHGEAR