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REVO M
User’s Manual
CD-Eng-REVO-M-2PH-30-40A-Thyristors-Units
36
15
Firing type
Choose an correct firing type allows to optimize the thyristor unit for the installed load.
The firing type has already configured in line with customer requirements that are defined in the Order
Code. The Order Code is written on the identification label.
However, if you wish to change the firing type you can use the software configurator or the Control
Panel
parameter on
menu.
Caution:
this procedure must be performed only by qualified persons.
15.1
Zero Crossing (ZC -
)
ZC firing mode is used with Logic Output from temperature controllers and the Thyristor operates like a
contactor.
The Cycle time is performed by temperature controller. ZC minimizes interferences because the
Thyristor unit switches ON-OFF at zero voltage.
VOLTAGE SUPPLY (V)
ON OFF
LOAD VOLTAGE (V)
SSR from controller
15.2
Burst Firing (BF -
)
The Burst Firing is similar to the Single Cycle, but consecutive cycles ON are selectable between 2 and
255, with input signal equal at 50%.
Burst Firing is a method zero crossing that it reduces the electromagnetic interferences because the
thyristor switches at zero voltage crossing.
The example show the Burst Firing with Burst cycles:
=4
VOLTAGE SUPPLY (V)
100%
ON OFF
LOAD VOLTAGE (V)
75%
50%
25%
