IOtech MultiScan 1200, User Manual

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6 Chapter 1: System Overview TempScan / MultiScan User's Manual
Disconnecting & Reconnecting the System During Setup
In the following hardware chapters, the first steps of the hardware setup will require you, if system
disconnections are necessary, to make these disconnections in the proper order to insure safety.
Likewise, the last steps of the hardware setup will require you to make the reconnections in the proper
order to insure safety, prior to reapplying power to the entire system.
Consequently, these safety steps involve the hardware disconnection of the PC, the master unit, the
expansion units, the scanning cards, and any other devices attached to the system, as follows.
CAUTION
CAUTION CAUTION
CAUTION
Before connecting the master unit to the PC controller interface, power down all
devices that are connected or to be connected. Failure to do so could damage the
equipment.
CAUTION CAUTION CAUTION CAUTION
Before connecting an Exp/10A or Exp/11A expansion unit to its master unit, or to
another expansion unit, power down all devices that are connected or to be
connected. Failure to do so could damage the equipment.
CAUTION
CAUTION CAUTION
CAUTION
Avoid linking two or more expansion chassis with the same slave address.
Otherwise, the unspecified addresses may result in operating errors.
CAUTION CAUTION CAUTION CAUTION
Do not mix TempScan/1100 and MultiScan/1200 scanning cards within the same
system. TempScan/1100 scanning cards are designed for and supported only by
the TempScan/1100 master unit. Likewise, MultiScan/1200 scanning cards are
designed for and supported only by the MultiScan/1200 master unit. Otherwise,
operating errors or equipment damage may occur.
WARNING
WARNING WARNING
WARNING
Never install or remove the scanning card from the unit while it is still connected
to an external device or while the AC power is still on! Before installing the
scanning card into, or removing it from, the master or expansion unit, power down
all devices that are connected or to be connected. Common mode voltage
potentials exceeding 60 VDC or 30 Vrms at the terminals, may exist which could
cause bodily injury or death!
WARNING
WARNING WARNING
WARNING
Never disassemble the unit casing while it is connected to the AC power line!
Internal voltage potentials exist which could cause bodily injury or death!