Zehnder EASY 5.0
71
Control method:
First of all, check the connection of the pressure tap tubes (crystal tubes) and that there is no moisture or foreign bodies
(insects, grease, etc.) inside them.
Machine (fan) off:
■
Contact between terminals (1) and (3) is open (∞ Ohms) Pressure switch electrically disconnected
■
The voltage between terminals (1) and (3) is a 24V DC electrically connected pressure switch
■
The corresponding digital input (DI) must indicate an “idle” state
Switch the fan to manual operation and request a setpoint of 50%:
■
Contact between terminals (1) and (3) is closed (< 2) Pressure switch electrically disconnected
■
The voltage between terminals (1) and (3) is a 0V DC electrically connected pressure switch
■
The corresponding digital input (DI) must indicate an “active” state.
31. PT1000 temperature sensor
The PT1000 temperature sensors are sensors whose sensitive element is made of
platinum (PT), which is very robust, very accurate and has almost no deviation over
the entire service life of the unit. It is therefore not necessary to replace them during
preventive maintenance.
Reference point
Details
P1 (+)
Positive pressure tap
P2 (-)
Negative pressure tap
A
Removable lid
B
Setting
1
Common terminal
2
NC contact terminal (not used)
3
NO contact terminal
Z-MASTER-V1122-CSY-INM-Zehnder Easy5.0
