User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
Page
11
3. Getting Started
Building An RTU
Every RTU must have a power supply and a processor (CPU) module. Most RTUs also have some inputs
and outputs as well. The two main types of power supplies are a PSU-3 and a PS-11/21. The two main types
of processors are a PC-1 and a CP-11/21. A PSU-3 is used with a PC-1 and a PS-11/21 is used with a CP-
11/21 as shown below. A wide variety of input and output modules are available and these can be used in
any combination.
Both types of RTUs are configured the same way with the same Toolbox software. However, the PC-1 RTU
was designed to be a simpler RTU and does not have the same speed, memory and functionality of a CP-
11/21 RTU.
A PC-1 module can only be used on a 4-slot backplane (a BA-4) and is installed in the left-most slot. A CP-
11/21 can be used on a 4, 6 or 12 slot backplane (a BA-40, BA-6 or BA-12 respectively) and can be placed
in any slot. Usually the CP-11/21 is installed in slot 2 (the second slot from the left) and the PS-11/21 power
supply is installed in slot 1. Typical RTU layouts are shown below.
BA
-
6
12 VDC
PSU
-
3
BA
-
4
MAINS
POWER
PS11 PC-1 IO-4 AI-10 CP - 11 CP11 MC11 DI-5
MAINS
POWER
MC11
A number of backplanes can be linked together to allow one processor module to control up to 63 IO
modules.
Caution! IO Modules can be installed or removed while an RTU is running (called Hot Swapping)
without any effect on the other modules. However, adding or removing an MC-xx module will cause a warm
start to occur which may temporarily affect the state of any outputs. For more information about hot swapping
power supply or processor modules please see the Redundancy appendix.