Instruction manual

ControlWave Micro Instruction Manual (CI-ControlWave Micro)
Revised Jun-2013 Introduction 1-7
maintenance is stored here. This includes the last states of all I/O points,
audit/archive historical data (if not stored in FLASH), the values of any
variables marked RETAIN, the values of any variables assigned to the
static memory area, and any pending alarm messages not yet reported.
SDRAM
The CPU module contains 64MB of synchronous dynamic random
access memory (SDRAM). SDRAM holds the running application
(ControlWave project) as well as a copy of system firmware and the
current values of any variables not marked RETAIN or stored in the
static memory area. This allows the system to run faster than it will
from the SRAM memory. SDRAM is not battery-backed.
1.5 Power Supply/ Sequencer Module (PSSM)
The Power Supply/Sequencer module (PSSM) takes power from an
external bulk DC power supply and then provides power through the
ControlWave Micro housing/backplane to all installed modules.
The PSSM operates from +10.7 to +30 Vdc or from +21.7 to +30 Vdc.
You configure the nominal input supply configuration (12V or 24V)
using configuration jumper switches on the PSSM.
The PSSM includes:
 a wide input range Vin to 3.3V DC to DC Converter
 1200 msec good power detection circuitry
 Vin out-of-specifications detection circuitry
 Watchdog output connector
 Status LEDs
 Vin 12-bit serial analog to digital converter
There are two versions of the PSSM currently available for the
ControlWave Micro. One version includes a keyed run/remote/local
switch (see Figure 1-4); the other version includes a mode switch (see
Figure 1-5). Chapter 2 includes instructions for setting these switches
and configuring the PSSM.