ENGLISH
8
Reference
(Figure 2 Electrical
connections )
Description
1
Pull-out 4-pole terminal board for connecting the digital
inputs
2
Pull-out 3-pole terminal board for alarm signals or
system status
5.1.
Electrical connections: Inputs and Outputs
The basic expansion module for EVOPLUS SMALL circulators has digital inputs
and 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 and par. 5.1.2).
5.1.1.
Digital Inputs
With reference to Figure 3 (Pull-out 4-pole terminal board: digital inputs) the digital
inputs available are:
Input
Terminal no.
Type of
contact
Associated function
IN1
1
Clean contact
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.
2
IN2
3
Clean contact
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.
4
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.
Digital Outputs
With reference to Figure 4 (Pull-out 3-pole terminal board: connection for indicating
alarms) and Figure 5 (Pull-out 3-pole terminal board: connection for indicating pump
running) the basic expansion module offers a single digital output, the function of
which may be set from the menu (see par. 8 Page 12.0):
Output Terminal no.
Type of
contact
Associated function
OUT1
NC
NC
• Presence/Absence of alarms in the
system
• Pump running/Pump stopped
C
COM
NO
NO
Output OUT1 is available on the pull-out 3-pole terminal board as specified in Table
3 which also shows the type of contact (
NC =
Normally Closed,
COM =
Common,
NO =
Normally Open).
The electrical characteristics of the contacts are shown in Table 4.
In the example shown in Figure 4 the function associated with the output OUT1 is
“alarms present” and L1 lights up when there is an alarm in the system and switches
off when no type of malfunction is found.
Table 1: Electrical connections
Table 2: Digital inputs IN1 and IN2
Table 3: Output OUT1
