Danfoss VLT FC 103 Instruction Manual page 48

Programming
4. 6-10 Terminal 53 Low Voltage. Set minimum
external voltage reference on Terminal 53 at 0 V.
(This sets the minimum input signal at 0 V.)
Figure 5.4
5 5
5. 6-11 Terminal 53 High Voltage. Set maximum
external voltage reference on Terminal 53 at 10 V.
(This sets the maximum input signal at 10 V.)
Figure 5.5
6. 6-14 Terminal 53 Low Ref./Feedb. Value. Set
minimum speed reference on Terminal 53 at 6
Hz. (This tells the adjustable frequency drive that
the minimum voltage received on Terminal 53 (0
V) equals 6 Hz output.)
Figure 5.6
5-2
®
VLT
14.7% 0.00A
Analog Reference
6-10 Terminal 53 Low
Voltage
0.00 V
14.7% 0.00A
Analog Reference
6-11 Terminal 53 High
Voltage
10.00 V
14.7 % 0.00 A
Analog Reference
6 - 14 Terminal 53 Low
Ref./Feedb. Value
000020.000
MG16J122 - VLT
Refrigeration Drive Instruction Manual
7. 6-15 Terminal 53 High Ref./Feedb. Value. Set
maximum speed reference on Terminal 53 at 60
Hz. (This tells the adjustable frequency drive that
the maximum voltage received on Terminal 53
(10 V) equals 60 Hz output.)
1(1)
Q3-21
Figure 5.7
With an external device providing a 0–10 V control signal
connected to adjustable frequency drive terminal 53, the
system is now ready for operation. Note that the scroll bar
1(1)
on the right in the last figure of the display is at the
Q3-21
bottom, indicating the procedure is complete.
Figure 5.8 shows the wiring connections used to enable
this set-up.
6-1*
U - I
A53
1(1)
Q3-21
Figure 5.8 Wiring Example for External Device Providing 0–10 V
Control Signal (Adjustable Frequency Drive Left, External Device
Right)
®
is a registered Danfoss trademark
14.7 % 0.00 A
Analog Reference
6 - 15 Terminal 53 High
Ref./Feedb. Value
50.000
53 +
0-10V
55
1(1)
Q3-21