9.10.2.13
Motorheating ON / OFF, Function
|
12D
|
In order to avoid a sticking or a freezing of standing fans in cold environment, the
“
motor heating
system
”
can be switched on.
11.05.2007
v_12d_motorheizung.vsd
Controller
24V
D1 D1
- - - - -
TB/TP
1
1
Setting
“
dc brake level
”
The motor heating can be activated over a digi-
tal input.
E.g. over a freeze protection thermostats at
digital input
“
Digital In 1
”
(depending on device
type at terminals
“
D1
”
-
“
D1
”
or
“
D1
”
-
“
24 V
”
).
Motor heating active at closed contact, if no
modulation of the controller is present (for
“
D1
”
= Inverting
“
OFF
”
)
The motor heating function corresponds to the braking function in which a direct current puts the
motor into standstill. The height of the
“
brake level
”
is set in
“
Motor Setup
”
.
The setting
“
DC brake level
”
refers in % to the value set in
“
MotorRated Curr.
”
.
Setting range: 1 - 100 %
Factory setting: 50 %
A current is impressed here, which does not permit any rotation of the fans. The value required to
prevent any freezing depends on the ambient conditions and the connected motor
’
s technical data.
The setting effected is to be checked under real conditions. The higher the setting, the greater the
heating output generated in the motor (heat dissipation). The motor heating or stationary heating can
only become active, where there is no given modulation as a result of regulation.
To prevent any overheating, motor protection in the form of thermal protection installed in the motor is
required (
motor protection). The heating function is switched off when the motor protection function
of the regulating unit responds.
Info
The active motor heating is displayed by the radiator symbol.
28.7
°
C
E1 Actual
9.10.2.14
Direction of rotation, Function
|
13D
|
Switch over
“
clockwise
”
=
|
CW
|
rotation and
“
counterclockwise
”
0
|
ccw
|
rotation. When switching
over via a digital input, the device works with the opposite function than the one set in motorsetup.
Information
If the rotary direction is reversed with an available modulation, it is initially reduced to
“
0
”
(disconnected) and subsequently increased back to the default value.
Info
The active switch over of direction is indicated by the symbol in the display.
28.7
°
C
E1 Actual
Contact e.g. by digital input
“
Digital In 1
”
for factory setting
“
clockwise rotation
”
=
|
CW
|
•
“
D1 Inverting
”
=
“
OFF
”
:
– “
CLOCKWISE
”
=
|
CW
|
for opened contact
– “
COUNTERCLOCKWISE
”
=
|
CCW
|
for closed contact
•
“
D1 Inverting
”
=
“
ON
”
:
– “
COUNTERCLOCKWISE
”
=
|
CCW
|
for opened contact
– “
CLOCKWISE
”
=
|
CW
|
for closed contact
Operating Instructions
Fcontrol
–
model series FXDM25/32AM
Programming
L-BAL-E212-GB 1451 Index 003
Part.-No.
75/123
