Wiring To Control Terminals; Using Shielded Control Cables - Danfoss VLT AutomationDrive FC 303 Instruction Manual

Installation
Terminal description
Default
Terminal Parameter setting
27 5-12 [2] Coast
inverse
29 5-13 [14] JOG
20 -
37 - Safe Torque
Off (STO)
Analog inputs/outputs
39 -
42 6-50 [0] No
operation
50 - +10V DC
53 6-1 Reference
54 6-2 Feedback
55 -
Terminal description
Default
Terminal Parameter setting
Serial communication
61 -
68 (+) 8-3
69 (-) 8-3
Relays
VLT ® AutomationDrive Instruction
Manual
Description Terminal Parameter
Selectable for either
digital input or 01, 02, 03
output. Default setting
04, 05, 06
is input.
Common for digital
Table 2.3 Terminal Description
inputs and 0V
potential for 24V

2.4.5.3 Wiring to Control Terminals

supply.
Safe input. Used for
STO. Control terminal connectors can be unplugged from the
Adjustable frequency drive for ease of installation, as
shown in Figure 2.11.
Common for analog
output
Programmable analog
output. The analog
signal is 0–20mA or
4–20mA at a
maximum of 500Ω
10V DC analog supply
voltage. 15mA
maximum commonly
used for potenti-
ometer or thermistor.
See 10.1 Power-dependent Specifications for control terminal
Analog input.
wiring sizes.
Selectable for voltage
See 6 Application Set-Up Examples for typical control wiring
or current. Switches
connections.
A53 and A54 select
mA or V.
Common for analog
input
Description
Integrated RC filter for
cable screen. ONLY for
connecting the shield
when experiencing
Figure 2.13 Connecting Control Wiring
EMC problems.
RS-485 Interface. A
control card switch is

2.4.5.4 Using Shielded Control Cables

provided for
termination resistance.
Correct shielding
The preferred method in most cases is to secure control
and serial communication cables with shielding clamps
provided at both ends to ensure best possible high
frequency cable contact.
If the ground potential between the adjustable frequency
drive and the PLC is different, electric noise may occur that
will disturb the entire system. Solve this problem by fitting
®
MG.33.AI.22 - VLT is a registered Danfoss trademark
Terminal description
Default
setting
[0] No
5-40 [0] operation
5-40 [1] [0] No
operation
1. Open the contact by inserting a small screwdriver
into the slot above or below the contact, as
shown in Figure 2.13.
2. Insert the bared control wire into the contact.
3. Remove the screwdriver to fasten the control wire
into the contact.
4. Ensure the contact is firmly established and not
loose. Loose control wiring can be the source of
equipment faults or less than optimal operation.
1
2
Description
Form C relay output.
2
Usable for AC or DC
voltage and resistive
or inductive loads.
2-9
2