www.sentera.eu
MIW-RTVS8-EN-000 - 16 / 02 / 2022
7 - 13
RTVS8
115—230 VAC TRANSFORMER FAN SPEED
CONTROLLER WITH MODBUS RTU COMMUNICATION
4.
Insert the cables through the cable glands and do the wiring according to the
wiring diagram (see
Fig. 3
) while adhering to the information from section
“
Wiring and connections
” above.
4.1
Connect the power supply line (terminals L, N marked as INPUT and Pe);
4.2
Connect the motor terminals (L and N marked as MOTOR and Pe);
4.3
If applicable, connect the unregulated output (L and N marked as RELAY).
The relay output contacts are Normal Open (NO) type - 16 A resistive with
115—230 VAC supply. The functionality of the unregulated output can
be selected via Modbus through Holding register 19. By default (factory
setting), the unregulated output indicates alarm conditions and can be
used for connecting an alarm indication device - e.g. a lamp, buzzer, etc.
4.4
Connect the TK contacts for monitoring of the thermal motor protection to
the motor TK terminals.
A safety isolator / disconnect switch should be installed on the mains electricity
side of all motor drives.
ATTENTION
Fig. 3 Wiring and connections
RJ45 master socket - to
connect Sentera HVAC
transmitter or potentiometer
RJ45 Gateway - to connect PC
with 3SModbus software
Regulated output to
motor
Relay output (unregulated output)
NO Contact, 115—230 VAC
Power supply
115—230VAC/50—60Hz
TK monitoring for thermal
motor protection
Make sure the connections are correct before you power the unit.
ATTENTION
5.
Close the cover and secure it with the screws.
6.
Tighten the cable glands.
7.
Switch on the mains supply.
8.
Customise the factory settings to the desired ones via the 3SModbus software
or Sensistant. For the default factory setting, see the
Modbus register map.
The desired fan speed can be modfied via Modbus holding register 12, or set
automatically via Modbus holding register 18, according to connected sensor
output value.
For the complete Modbus register data, see the Modbus Register Map of the
product. This is a separate document linked to the article code on the website
containing the list of registers. Products with earlier firmware versions may not
be compatible with this list.
NOTE