EN7510364-00
EN - 10
4.2 Machine automatic operation control
Used to remotely authorise or prohibit the operation of the machine.
The machine is on when the contact is closed (J6 terminals 2-3).
4.3 Override control
Used to turn on all the fans. The fans operate when the contact is closed (J6 terminals 1-3).
4.4 Two setpoints
Used, for example, for summer/winter or day/night operation. Each circuit can have up to two control setpoints. Setpoints 1 to 2
can be switched via the potential-free (dry) contact (J6 terminals 4-6), the console or over a CMS.
4.5 Stage runtime balancing
The running time of each fan stage is balanced by a time meter. The type of balancing of the fan running time can be configured
with A110.
4.6 Misting (units with spray ducts).
Parameter A10 = YES
Used to increase the efficiency of the drycooler by misting tiny droplets of water into the ambient air to cool it through evaporation.
To activate this function, set parameter A10 = YES
A 1 0
M I S T I N G
Y E S
2 possible options depending on the value of parameter A113:
- Optimised water consumption A113 = WATER: the water misting does not start until all the stages are on.
- Optimised electricity consumption A113 = ELEC: the water misting does not come on until the outdoor temperature
reaches the defined value (parameter A199)
A 1 1 3
M I S T I N G
W A T E R O P T I M I S A T I
O N
E L E C O P T I M I S A T I O N
Default value
Other setting values
●
Control stage No. 1 (EC fan):
The control signal (0 / 10V) of the stage # 1 varies as
follows:
-
Measurement = A121 (or A122) – A106 → 0V
-
Measurement = A121 (or A122) + A106 → 10V
The operation of the stage 1 (EC) without stage AC is on.
A108
A107
A
121 ou A122
A121 + A106
A121 – A106
S
T
A
G E EC
0/10
Stage no 1
Temp
outside
range
Temp
outside
range
Measurement
Setpoint
●
Operating the stage No. 1 (EC) with at least one
switched AC stage
- If an AC stage is in operation, the minimum speed
of the stage = A115.
The A115 setting is adjustable from 0 to 5V in
increments of 0.1.
Default value of A115 = 2V
- When the last AC stage is stopped, stage speed
No. 1 may be less than A115 the after A108
time.
A108
A107
A
121
ou
A122
A115
A121 + A106
A121 – A106
S
T
A
G E EC
Stage no 1
Temp
outside
range
Temp
outside
range
Measurement
Setpoint
A115/10V
A115
