16
VLT
®
3500 HVAC
MG.35.B1.02 – VLT is a registered Danfoss trademark
*) In UL versions: Max. 240 V AC, 2A.
NB
NB
NB
NB
NB: If a thermistor is used for motor protection, it must be wired from terminal 50 to terminal 16 (see description of choice in
parameter 400).
Terminal 39:
Frame for analogue/digital outputs.
Terminals 42-45:
Analogue/digital outputs for indicating e.g. frequency,
reference, current and torque (0-20 mA or 4-20 mA at
max. 470 ohm)/indication of selected status, alarm or
warning (24 V DC at min. 600 ohm). See parameters
407 and 408 on pages 67-68.
Terminal 50:
10 V DC, max. 17 mA. Supply voltage to the poten-
tiometer and the thermistor.
Terminal 53:
0-10 V DC, R
i
= 10 kohm. Analogue reference input,
voltage.
See parameter 412 on page 69.
Terminal 55:
Frame for analogue reference inputs.
Terminal 60:
0/4-20 mA, R
i
= 188 ohm. Analogue reference input,
current.
See parameter 413, page 69.
Terminal 61:
Earth connection, via switch 04 (see page 172), to the
screen for the communication cable.
Terminals 68-69:
RS 485 interface. Serial bus communication.
Terminal 12:
24 V DC, max. 140 mA. Supply voltage to digital
inputs (DIN 0 -DIN 7).
Terminals 16-33:
0/24 V, R
i
= 2 kohm. <5 V = logical "0", >10 V =
logical "1".
Digital inputs. See parameters 400-406, pp 62-66.
Terminal 20:
Frame for digital inputs.
Terminal 38:
Earth connection to screen for control cables in units
with no terminal brackets for the screen.
Terminals 01-03*):
Relay output. Max. 250 V AC, 2A. Min. 24 V DC, 10
mA or 24 V AC, 100 mA. See parameter 409, page
68.
Terminals 04-05*):
Relay outputs. Max. 250 V AC, 2A. Min. 24 V DC, 10
mA or 24 V AC, 100 mA. See parameter 410, page
69.
Below is a list of control card terminals on VLT 3500
HVAC. A description of the control signals and ter-
minals is found at the bottom of this page.
Terminal
2.4 Electrical installation
Connection of control card terminals
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