Danfoss VLT FC 100 Operating Instructions Manual page 87

5 How to Operate the Frequency Converter
On
Warm
5
Alarm
Operation Keys for local control are found at the bottom of the con-
trol panel.
Hand
O
on
[Hand On]
enables control of the frequency converter via the GLCP. [Hand On] al-
so starts the motor, and it is now possible to enter the motor speed da-
ta by means of the arrow keys. The key can be selected as
Disable [0] via par. 0-40 [Hand on] Key on LCP .
or
The following control signals will still be active when [Hand On] is acti-
vated:
• [Hand on] - [Off] - [Auto on]
• Reset
• Coasting stop inverse
5.1.3 RS-485 Bus Connection
One or more frequency converters can be connected to a controller (or
master) using the RS-485 standard interface. Terminal 68 is connected
to the P signal (TX+, RX+), while terminal 69 is connected to the N sig-
nal (TX-,RX-).
If more than one frequency converter is connected to a master, use
parallel connections.
86
OK
Auto
Reset
on
Enable [1]
MG.11.F3.02 - VLT
VLT HVAC Drive High Power Operating In-
• Reversing
• Set-up select lsb - Set-up select msb
• Stop command from serial communication
• Quick stop
• DC brake
NB!
External stop signals activated by means of control
signals or a serial bus will override a "start" com-
mand via the LCP.
[Off]
stops the connected motor. The key can be selected as Enabled [1] or
Disabled [0] via par. 0-41 [Off] Key on LCP . If no external stop function
is selected and the [Off] key is inactive the motor can only be stopped
by disconnecting the mains supply.
[Auto on]
enables the frequency converter to be controlled via the control termi-
nals and/or serial communication. When a start signal is applied on the
control terminals and/or the bus, the frequency converter will start. The
key can be selected as Enabled [1] or Disabled [0] via par. 0-42
on] Key on LCP .
NB!
An active HAND-OFF-AUTO signal via the digital in-
puts has higher priority than the control keys [Hand
on] – [Auto on].
[Reset]
is used for resetting the frequency converter after an alarm (trip). It
Enable [1] or Disable [0] via par. 0-43 [Reset] Key
can be selected as
on LCP .
The parameter shortcut can be carried out by holding down the [Main
Menu] key for 3 seconds. The parameter shortcut allows direct access
to any parameter.
RS 232
USB
RS 485
Illustration 5.1: Connection example.
® is a registered Danfoss trademark
structions
[Auto
68 69 68 69 68 69
+
-