18
ENG
“optiMist” +0300065EN - rel. 1.6 - 18/06/2021
3.8 Water treatment system control
Water treatment activated:
G0
ROEN
Fig. 3.u
Cabinet
ROEN
0 Vac (off ) /24 Vac (active)
GO
COM
Note:
the ROEN/COM contact can be used as a unit status contact: 0
Vac (standby), 24 Vac (operating).
Signal from water treatment system:
G0
ROW
Fig. 3.v
Cabinet
ROW
NO (warning signal) /NC (active)
GO
COM
Alarm from water treatment system:
G0
ROAL
Fig. 3.w
Cabinet
ROAL
NO (warning) /NC (attivo)
GO
COM
N.B.: the unit is supplied with a jumper on ROAL-G0 terminals
3.9 Cumulative alarm output (J15)
AL AL
Fig. 3.x
CONNECTIONS:
Cabinet optiMist
Terminal
J15
ALL
normally open
ALL
COM
3.10 Alarm inputs from external devices
AF AF
FLUX
SC
G0
Fig. 3.y
Alarm air-fl ux (FLUX):
Cabinet
FLUX
NO (Alarm) / NC (ON)
G0
COM
Alarm drop separator clogged (SC):
Cabinet
SC
NO (Alarm) / NC (ON)
G0
COM
N.B.: the unit is supplied with a jumper on SC-G0 and FLUX-G0 terminals
3.11 Frost protection alarm output
Alarm / Frost protection activation (AF):
Cabinet
AF
NO (T>5°C OFF) / NC (T<5°C ON)
AF
COM
3.12 Backup cabinet signal
HBT
HBT
BCKP
G0
Fig. 3.z
Backup function
The backup function allows the activation of a supporting cabinet in case
of unexpected switch-off of the main cabinet.
Two types of backup management are available:
• HBT: control on the heartbeat of the main control
• BMS: control by supervisor
The HBT control allows the activation of the backup cabinet keeping
controlled the heartbeat (digital output HBT) of the main Optimist. Wiring
the digital contact HBT with the BKUP input of the backup cabin, the
backup function check if the heartbeat is active (BKUP contact closed). If
the signal dies (BKUP contact opened), the backup cabin starts working.
The BMS control check the status of the DIG 75 variable.
If the variable is 1, the backup cabin is off ; if it switches to 0, the backup
cabin starts working.
Note:
The enabling of the backup function must be set only in the
Optimist for backup, inside “Zone Menu
à
Special Function 2/3” in
Installer menu
Backup cabinet signal (BCKP):
Cabinet
BCKP
NO (main OFF) / NC (principale ON)
G0
COM
Segnale di vita cabinet (HBT):
Cabinet
HBT
NO (back up OFF) / NC (back up ON)
HBT
COM