Santerno Sinus M - 12.8 DB Resistor Enable Duty setting

12-9
12.8 DB Resistor Enable Duty setting
Group Code Parameter Set Range Initial Unit
Function
group 2
H75 [Enable duty limit] 1
0 ~ 1 1
H76 [Enable duty] - 0 ~ 30 10 %

Set H75 to 1.

Set %ED (Enable Duty) in H76.
 H75: DB resistor ED limit setting
0
No limit
Caution:
Take caution when DB resistor is used over its Watt rating. Fire may result from
resistor overheat. When resistor having heat detection sensor is used, sensor
output can be used as external trip signal in multi-function input.
1 ED is limited as the setting in H76.
 H76: set the resistor operating rate (%ED) in one sequence of operation. Continuous usage rate is Max
15 sec and usage signal is not issued over 15 sec.
Ex 1)
[%]100
____
_
76 ×
+++
=
stopTdecTsteadyTaccT
decT
H
Where: T_acc: Acceleration time to reach the set freq.
T_steady: Time for constant speed operation at setting freq.
T_dec: Time to decelerate to lower frequency set.
T_stop: waiting time at motor stopped before operation again.
Freq.
T_acc T_steady T_dec T_stop
Ex 2)
[%]100
2__1__
_
76 ×
+++
=
steadyTaccTsteadyTdecT
decT
H
Freq.
T_acc
T_steady1
T_dec
T_steady2