Maximum cross-section to control terminals, rigid wire
2.5 mm
2
/14 AWG
Maximum cross-section to control terminals, flexible cable
2.5 mm
2
/14 AWG
Minimum cross-section to control terminals
0.05 mm
2
/30 AWG
6.4.5 Digital Inputs
Programmable digital inputs
4
Terminal number
18, 19, 27, 29
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
Input resistance, R
i
Approximately 4 kΩ
Digital input 29 as thermistor input
Fault: >2.9 kΩ and no fault: <800 Ω
Digital input 29 as pulse input
Maximum frequency 32 kHz push-pull-driven & 5 kHz (O.C.)
The digital inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
6.4.6 Analog Inputs
Number of analog inputs
2
Terminal number
53, 54
Terminal 53 mode
Parameter 16-61 Terminal 53 Setting
: 1 = voltage, 0 = current
Terminal 54 mode
Parameter 16-63 Terminal 54 Setting
: 1 = voltage, 0 = current
Voltage level
0–10 V
Input resistance, R
i
Approximately 10 kΩ
Maximum voltage
20 V
Current level
0/4–20 mA (scalable)
Input resistance, R
i
<500 Ω
Maximum current
29 mA
Resolution on analog input
10 bit
6.4.7 Analog Outputs
Number of programmable analog outputs
2
Terminal number
42, 45
(1)
Current range at analog output
0/4–20 mA
Maximum load to common at analog output
500 Ω
Maximum voltage at analog output
17 V
Accuracy on analog output
Maximum error: 0.4% of full scale
Resolution on analog output
10 bit
1
Terminals 42 and 45 can also be programmed as digital outputs.
6.4.8 Digital Output
Number of digital outputs
4
Terminals 27 and 29
Terminal number
27, 29
(1)
AQ367426199594en-000101 / 130R0988 | 49
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Specifications
VLT® HVAC Drive FC 131
Operating Guide