Pyro Slaves PS 2000

The Pyro Slaves are microprocessor controlled fireworks units.

With a water resistant case and an overall bus cable length of 1000m (3300 ft.) it is possible to place the Pyro Slaves anywhere near the 'hot' area and in secure distance to the Pyro Master. Each slave has a rechargeable 12V lead battery which makes it independent from any mains supply.

The electric matches could be easy connected through colored clamp connectors placed at the top of the PS 2000 case (view a picture of the connector layout for the PS 2004). Each channel is numbered and has its own ground clamp (black). The ignition voltage (12V od 100V dc) will be switched to the red clamp.

The electrical conditions (conductivity) of all the connected matches are tested and transmitted to the Pyro Master. So every fault (broken line, wrong channel) is detected and could be corrected before the fireworks show starts.
In addition the Pyro Slaves send the status of their internal battery to the Pyro Master

A Pyro Slave must be activated to accept fireworks commands by pressing a live switch.

After the 'ignition-on' command the Pyro Master sends a special watch-dog signal periodically to all connected Pyro Slaves. If this signal is no longer send the Pyro Slave switches itself into a secure mode. So on any fault condition during the fireworks show it is safe to switch off the Pyro Master.

Connecting electric matches to the Pyro Slaves:

• Standard Ignition Voltage (12V dc)

The energy needed to fire the electric matches is provided by the internal lead accu.
With the standard module up to 6 normal electric matches could be fire with one channel at the same time.
• High Voltage Ignition Module (100V dc)

The energy needed to fire the electric matches is provided by a special dc-dc converter.
The converters output power is 25W (PS2004) or 50W (PS2008).
With this HV module up to 50 normal (2-10 Ohms) electric matches could be fired with one channel at the same time.

Method	parallel	in series
Advantage	a defect match  has no influence  to the others	every defect match  or a broken line is  detected
Disadvantage	high ignition current, conductivity test cannot  detect a broken line if  at least one match is  connected correct	all matches in the line  must fire at the same  to ensure the current  flow in the line

Therefore we recommend using the second method with identical matches for each channel.

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