SODECA VSD/A, Wiring And Configuration Manual

Page: 13 / 21

8
EN
AP5. FIRE MODE with NC activation signal – Analog speed/potentiometer
This section explains how to configure the
“
FIRE
”
control mode with a normally open (NC) activation signal and two
operation speeds; the fire speed is adjusted as a preset speed and the normal speed is adjusted with an analog signal.
FIRE MODE with NC activation signal
When the free potential contact is normally closed, which selects the operation mode, and the drive is receiving the RUN
signal, the drive will operate at a speed adjusted with an analog signal or a potentiometer, with all the protections enabled.
If the fire mode signal is active, that is when the activation contact changes to closed position, and the drive is receiving
the start signal (it can be the a contact of the fire mode), the drive will work at a preset speed with all the protections
disabled.
(See Fig.6).
5.1 PROGRAMMING
Use the next table to change to, or modify, the Fire mode with normally closed activation signal (NC) . The Fire mode
speed can be adjusted to go forwards or reverse.
Table “FIRE MODE with NC activation signal – Analog speed/potentiometer”
5.2 WIRING
Before the start of the programming, wire the L1-L2-L3 input phases when using three phase equipment and wire the
L1-L2/N input phases when using single phase equipment.
Once the “FIRE MODE with NC contact” control mode is selected, that is after introducing the parameters of the fire
mode table (section 5.1), wire the drive as seen in the picture. (See Fig. 6.)
The Fire signal disables the protection features and maintains a constant speed. The Normal mode activates a constant
speed, distinct from the Fire speed. Both modes require a starting switch (Run), which can be replaced by a short-circuit
between terminals 1 & 2, or a contact related to the Fire and Normal mode activation.
In case the short-circuit is chosen, the drive will be always enabled and only will stop when the short-circuit is opened;
then display will show

.
5.3 “FIRE MODE with Analog Speed” OPERATION MODE
FIRE MODE with NC activation signal
1. Verify that the Fire mode signal halts the Fire mode and activates the start signal (Run).If necessary, use a two
contact relay, one contact Normally Open and the other Normally Closed.
2. Verify that the Normal mode signal only triggers the start signal (Run).
3. When one of the two modes is triggered, the drive will accelerate towards de preset speed according to the table
(see section 4.1).
Parameter Description Adjustment Units

Maximum Frequency 50.0 Hz

Minimum Frequency x.x Hz

Acceleration Ramp Time 20 s

Deceleration Ramp Time 20 s

Motor Rated Current x.x A

Primary Command Source 0

Extended Menu Access code
101

Digital Input Function Select
15

Analog Input 1 Signal format


Fire Speed ± xx.x Hz

Starting Mode


Fire Logic Input
0:


Latch Fire 0:
