63
INSTALLATION
Menu Par.
No.
Nr. dis-
played
Display
Description
Range
Default
setting
UM
Access
type
Catego-
ry
M2
143
Delay
Quick
Stop
Next
Defines the stand-by time in seconds to switch off the
last cascade module on in Quick Stop mode.
5…255
15
Sec.
I
Cascade
M2
77
Hyst.
Down
Start
Module
Defines by how many degrees the temperature meas-
ured by the primary circuit's probe must fall below the
set-point in order for the subsequent module to be
started after the time interval set by Par. 75.
0…40
5
°C
I
Cascade
M2
78
Hyst.
Up Stop
Module
Defines by how many degrees the temperature meas-
ured by the primary circuit's probe must go above the
set-point in order for the subsequent module to be
switched off after the time interval set by Par. 76.
0…40
4
°C
I
Cascade
M2
144
Hyst.
Down
Quick
Start
Defines by how many degrees the temperature meas-
ured by the primary circuit's probe must go below the
set-point in order for the subsequent module to be
started after the time interval set by Par. 142 (quick-start
mode).
0…40
20
°C
I
Cascade
M2
145
Hyst. Up
Quick
Stop
Defines by how many degrees the temperature meas-
ured by the primary circuit's probe must go above the
set-point in order for the subsequent module to be
switched off after the time interval set by Par. 143 (quick
stop mode).
0…40
6
°C
I
Cascade
M2
146
Hyst. Up
Stop All
Defines by how many degrees the temperature meas-
ured by the primary circuit's probe must go above the
set-point in order for all "On" modules to be switched
off at the same time.
0…40
8
°C
I
Cascade
M2
147
Number
of Units
Defines the number of modules of which the cascade
consists.
1…8
8
I
Cascade
M2
148
Power
Mode
Defines the cascade operation mode.
0 Disabled 1 Min
burners 2 Max
burners
2
I
Cascade
M2
79
Max.
Setp.
Offset
Down
Defines the maximum decrease in the primary circuit's
cascade set-point. Is based on the primary circuit's
probe reading.
0…40
2
°C
I
Cascade
M2
80
Max.
Setp.
Offset
Up
Defines the maximum increase in the primary circuit's
cascade set-point. Is based on the primary circuit's
probe reading.
0…40
5
°C
I
Cascade
M2
81
Start
Mod.
Delay
Fact.
Defines the time in minutes from the moment the
demand is triggered until the activation of the set-point
increases or decreases provided for by Par. 79 e 80.
0…60
60
Min.
I
Cascade
M2
82
Next
Module
Start
Rate
It defines the minimum power for at least one of the
modules in the cascade in order for the next module to
be switched on (if the other conditions linked to Par. 75
and 77 are met).
10…100
80
%
I
Cascade
M2
83
Next
Module
Stop
Rate
It defines the maximum power for all the modules
in the cascade in order for the last module on to be
switched off (if the other conditions linked to Par. 76
and 78 are met).
10…100
25
%
I
Cascade
M2
84
Module
Rotation
Interval
It defines the time interval (in days) after which mod-
ules are rotated.
0…30
1
Days
I
Cascade
M2
149
First
Module
to Start
Establishes the number of the next module to be rotat-
ed (this value is automatically updated at each rotation).
1..16
1
I
Cascade
M2
86
PID P
Defines the proportional term to change the setpoint of
the cascade module.
0…1275
50
O
Cascade
M2
87
PID I
Defines the integral term to change the setpoint of the
cascade module.
0…1275
500
O
Cascade
M2
150
PID Slew
Rate Up
Defines the speed (in °C/100 ms) with which the set-
point of individual modules is increased in the event the
primary circuit's set-point is not achieved (if the value is
set to zero, the change is controlled by the PI of Par. 86
and 87 without restrictions).
0…25.5
1
O
Cascade
