DAB EVOPLUS SMALL Serie Instrucciones Para La Instalación Y El Mantenimiento página 14

Reference Description
(Figure 2 Electrical
connections )
Pull-out 6-pole terminal board for connecting the digital,
3
analogue and PWM inputs
Pull-out 7-pole terminal board for connecting the
4
MODBUS systems
Pull-out 3-pole terminal board for alarm signals or
5
system status
6 Connector for connecting twin circulators
Table 1: Electrical connections
5.1. Electrical connections: Inputs and Outputs and MODBUS
The multifunction expansion module for EVOPLUS SMALL circulators has digital and
analogue inputs and digital outputs so as to be able to achieve interface solutions with
more complex installations.
For the installer it will be sufficient to wire up the desired input and output contacts and
to configure their functions as desired (see par. 5.1.1, par. 5.1.2, par. 5.1.3 and par.
5.1.4).
5.1.1. Digital Inputs
With reference to Figure 3 Pull-out 6-pole terminal board: digital inputs the digital inputs
available are:
Type of
Input Terminal no.
contact
1
IN1 Clean contact
2
IN2 3 Clean contact
ENGLISH
Associated function
EXT: If it is activated from the control
panel (see par. 8 Page 13.0 of the
EVOPLUS menu) it will be possible
to command the switching on and off
of the pump in remote mode.
-
4
Table 2: Digital inputs IN1 and IN2
If the EXT and Economy functions have been activated from the control panel, the
system will behave as follows:
IN1 IN2 System Status
Open Open Pump stopped
Open Closed Pump stopped
Closed Open Pump running with set-point set by the user
Closed Closed Pump running with reduced set-point
5.1.2. MODBUS and LON Bus
The multifunction expansion module provides serial communication through an input
RS-485 (see Figure 4 Pull-out 7-pole terminal board : MODBUS connection). The
communication is achieved according to MODBUS specifications. With MODBUS it is
possible to set the circulator operating parameters in remote mode such as, for
example, the desired differential pressure, the regulating mode, etc. At the same time
the circulator can provide important information on the system status.
For the electrical connections refer to Figure 4 and Table 3:
MODBUS Terminals Terminal no.
A
B
Y
Table 3: RS_485 MODBUS terminals
10
Economy: If it is activated from the
control panel (see par. 8 Page 5.0 of
the EVOPLUS menu ) it will be
possible to activate the set-point
reduction function in remote mode.
Description
2 Terminal not inverted (+)
1 Terminal inverted (-)
3 GND