Instruction manual

ControlWave Micro Instruction Manual (CI-ControlWave Micro)
2-12 Installation Revised Jun-2013
Watchdog
Switch
PSSMs optionally include a watchdog metal oxide semiconductor field-
effect transistor (MOSFET) switch connector. The purpose of the
watchdog connector is to trigger an external alarm or annunciator if the
ControlWave enters a “watchdog” condition in which the CPU cannot
control your process. This occurs on power-up before the ControlWave
project starts, if the unit is reset, if the ControlWave project “crashes”
or if the system loses power. See Section 2.3.7.
2.3.2 PSSM Installation Overview
There are several steps you need to follow when you install the PSSM.
1. Identify the carton holding the PSSM and remove it from that carton.
See Section 2.2.1.
2. Set jumpers on the PSSM based on whether your external DC bulk
power supply provides +12V or +24V. See Section 2.3.3.
3. If your PSSM includes a mode switch (SW1) set it according to
Section 2.3.4.
4. Slide the PSSM into slot #1 of the housing.
5. Unplug terminal block connector TB1 from the PSSM and wire it to
an external bulk DC power supply. See Section 2.3.6.
6. If you want to use the watchdog connector TB2, unplug it from the
PSSM and wire it to an external annunciator or similar device
according to instructions in Section 2.3.7.
7. After you configure and install the CPU module in slot #2 re-connect
terminal blocks to their connectors to apply power to the unit.
2.3.3 Setting Jumpers on the PSSM
The PSSM has three jumpers which you set based on whether your
bulk DC power supply will provide +12V or +24V. See Figure 2-9 or
Figure 2-10 to locate the jumpers on your version of the PSSM.
 JP2: Three-position Power Fail Trip Point Selection Jumper:
o 1-to-2 Installed = Choose this to select +12V Bulk Supply
Power Fail Trip Point
o 2-to-3 Installed = Choose this to select +24V Bulk Supply
Power Fail Trip Point (default)
 JP4: Three-position Power Supply Shutdown Trip Point Selection
Jumper:
o 1-to-2 Installed = Choose this to select +12V Bulk Supply
Shutdown Trip Point.
o 2-to-3 Installed = Choose this to select +24V Bulk Supply
Shutdown Trip Point. (default)