26
9.6. External shut-down input (DI5))
The external forced shut-down command is used to force the unit to shut down.
It has priority if the Zehnder Eversky unit is:
■
at low speed (1/2) by time programming
■
At high speed (1/1) by time programming
■
at low speed (1/2) by forced low speed operation
■
At high speed (1/1) by forced high speed operation
The function is active when the contact is closed.
72
73
74
75
62
63
64
65
B7
71
61
DI5
(controller)
OFF
9.7. Fire protection input (DI8)
The fire protection input allows the control unit to be forced to operate regardless of
the ventilation setpoint currently requested by the time programme and flexibly
according to several options available in the controller.
This function is not activated as standard, it must be programmed.
This function requires the use of an external NO contact (input configurable as NC if
required).
When the input is configured as NO, the function is inactive when the contact is open
and activated when it is closed. And vice versa when it is configured as NC.
9.8. RS485 communication (MODBUS RTU or BACnet MS/TP) (port P1)
Port P1 on the controller is available for RS485 communication for MODBUS RTU or BACnet MS/TP protocols. It is
equipped with a 4 terminal screw connector.
Use shielded 2-pair crossed twisted cable such as BELDEN 3106A or BELDEN 3107A, or equivalent to ensure efficient
data transmission. It is important to select a cable with a nominal impedance close to 120 Ohms and low capacitance.
The speed of data transmission will depend on the length of the cables. It is important to keep the data cable away from
power cables and sources that produce regular power interruptions (contactors, relays, frequency inverters, etc.) to
avoid interference that could affect the quality of data transmission.
Connect the data wires (twisted pair) to terminals (B) and (A), and the shielding braid to (N). Terminal (E) must remain
free.
Connecting the BELDEN 3106A cable to port P1 (RS485)
Connecting the BELDEN 3106A cable to port P1 (RS485)
72
73
74
75
62
63
64
65
Fire pro-
tection
B7
71
61
DI8
(controller)
1G
-
+
2GD
P1
R
xTx
P2
R
xTx
TCP/1P
P/B
B 50
A 51
P 1
P 2
N 52
E 53
B 60
A 61
N 62
E 63
DI1a 71
DI2a 7
2
DI3a 7
3
DI4a 7
4
DI5a 7
5
DI6a 7
6
DI7a 77
DI8a 7
8
AO1a 91
AO2a 92
AO3a 93
AO4a 94
AO5a 95
ANGD 90
Ext.
Disp.
4+C
10 GDO
11 DO1b
12 DO2b
13 DO3b
14 DO4b
15 DO5b
16 DO6b
17 DO7b
30 A
GND
33 A
GND
40 A
GND
43 A
GND
31 AI1a
32 AI2a
34 AI3a
35 AI4a
41 UI1a
42 UI2a
44 UI3a
45 UI4a
3
Zehnder Eversky
