Danfoss VLT Midi Drive FC 280 User Manual

9.5 Cable Specications
Cable lengths and cross-sections
1)
Maximum motor cable length, shielded 50 m (164 ft)
Maximum motor cable length, unshielded 75 m (246 ft)
Maximum cross-section of control terminals, exible/rigid wire 2.5 mm
2
/14 AWG
Minimum cross-section of control terminals 0.55 mm
2
/30 AWG
Maximum STO input cable length, unshielded 20 m (66 ft)
1) For power cables cross-sections, see Table 9.1, Table 9.2, Table 9.3 and Table 9.4.
When complying with EN 55011 1A and EN 55011 1B the motor cable must in certain instances be reduced. See chapter 2.6.2
EMC Emission in the VLT
®
Midi Drive FC 280 Design Guide for more details.
9.6 Control Input/Output and Control Data
Digital inputs
Terminal number 18, 19, 27
1)
, 29, 32, 33
Logic PNP or NPN
Voltage level 0–24 V DC
Voltage level, logic 0 PNP <5 V DC
Voltage level, logic 1 PNP >10 V DC
Voltage level, logic 0 NPN >19 V DC
Voltage level, logic 1 NPN <14 V DC
Maximum voltage on input 28 V DC
Pulse frequency range 4–32 kHz
(Duty cycle) minimum pulse width 4.5 ms
Input resistance, R
i
Approximately 4 kΩ
1) Terminal 27 can also be programmed as output.
STO inputs
1)
Terminal number 37, 38
Voltage level 0–30 V DC
Voltage level, low <1.8 V DC
Voltage level, high >20 V DC
Maximum voltage on input 30 V DC
Minimum input current (each pin) 6 mA
1) Refer to chapter 6 Safe Torque O (STO) for more details about STO inputs.
Analog inputs
Number of analog inputs 2
Terminal number 53
1)
, 54
Modes Voltage or current
Mode select Software
Voltage level 0–10 V
Input resistance, R
i
Approximately 10 kΩ
Maximum voltage -15 V to +20 V
Current level 0/4 to 20 mA (scaleable)
Input resistance, R
i
Approximately 200 Ω
Maximum current 30 mA
Resolution for analog inputs 11 bit
Accuracy of analog inputs Maximum error 0.5% of full scale
Bandwidth 100 Hz
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
1) Terminal 53 supports only voltage mode and can also be used as digital input.
Specications Operating Guide
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Danfoss VLT Midi Drive FC 280 Specifications

General

Brand	Danfoss
Model	VLT Midi Drive FC 280
Category	DC Drives
Language	English