Preliminary User Manual UMAX023241 - Version: 1.1 13-63
object that should be changed prior to configuring other output objects is the
Output Type
object.
The supported output types by the controller are listed in
Table 8
below:
Table 8: Output Type Options
Value Meaning
Range [Unit]
0 Output
Disabled
N/A
10 Output
Voltage
0 to 60 [V]
20
Output Current
0 to 2500 [mA]
40
Output PWM
0 to 100 [%]
1000 Output
Digital On/Off
0 (OFF) or 1 (ON)
1020 Output
Digital Hotshot
0 (OFF) or 1 (ON)
There are two objects that are associated to
Proportional Current
and
Digital Hotshot
Output Type
s
that are not with others - these are
Dither Frequency
and
Dither Amplitude.
The dither signal is used
in
Proportional Current
mode and is a low frequency signal superimposed on top of the high
frequency (25kHz) signal controlling the output current. The two outputs have independent dither
frequencies which can be adjusted at any time. The combination of
Dither Amplitude
and
Dither
Frequency
must be appropriately selected to ensure fast response to the coil to small changes in
the control inputs but not so large as to affect the accuracy or stability of the output.
In
Proportional Voltage
type, the controller measures the Vps applied to the unit and based on this
information, the controller will adjust the PWM duty cycle of the signal (0-Vps amplitude) so that the
average signal is the commanded target value. Thus, the output signal is not an analog one. In order
to create an analog signal, a simple low pass filter can be connected externally to the controller.
In
PWM Duty Cycle
Output Type
, the controller outputs a signal (0-Vps amplitude) on a fixed output
frequency set by object 2380h
Output Frequency
with varying PWM Duty Cycle based on
commanded input. Since both outputs are connected to independent timers, the
Output Frequency
object can be changed at any time for each output without affecting the other.
Digital
Output Type
offers the user with four different output responses as listed in
Table 9
. The
controller will source any current required in any of the options listed in
Table 9
up to 2.5Amps.
Table 9: Digital Output Responses
0
Normal On/Off
1
Inverse Logic
2
Latched Logic
3
Blinking Logic
In a
‘Normal’
response, when the Control input commands the output ON, then the output will be
turned ON. However, in an
‘Inverse’
response, the output will be ON unless the input commands the
output ON, in which case it turns OFF.
If a
‘Latched’
response is selected, when the input commands the state from OFF to ON, the output
will change state.
If a
‘Blinking’
response is selected, then while the input command the output ON, it will blink at the
rate defined in the
Digital Blink Rate
object. When commanded OFF, the output will stay off. A
blinking response is only available with a
‘Digital On/Off’
type of output (not a Hotshot type).
