Analog inputs:
Number of analog inputs
2
Terminal number
53, 54
Modes
Voltage or current
Mode select
Switch S201 and switch S202
Voltage mode
Switch S201/switch S202 = OFF (U)
Voltage level
: 0 to + 10 V (scaleable)
Input resistance, R
i
approx. 10 k
Ω
Max. voltage
±
20 V
Current mode
Switch S201/switch S202 = ON (I)
Current level
0/4 to 20 mA (scaleable)
Input resistance, R
i
approx. 200
Ω
Max. current
30 mA
Resolution for analog inputs
10 bit (+ sign)
Accuracy of analog inputs
Max. error 0.5% of full scale
Bandwidth
: 200 Hz
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Pulse inputs:
Programmable pulse inputs
2
Terminal number pulse
29, 33
Max. frequency at terminal, 29, 33
110 kHz (Push-pull driven)
Max. frequency at terminal, 29, 33
5 kHz (open collector)
Min. frequency at terminal 29, 33
4 Hz
Voltage level
see section on Digital input
Maximum voltage on input
28 V DC
Input resistance, R
i
approx. 4 k
Ω
Pulse input accuracy (0.1 - 1 kHz)
Max. error: 0.1% of full scale
Analog output:
Number of programmable analog outputs
1
Terminal number
42
Current range at analog output
0/4 - 20 mA
Max. resistor load to common at analog output
500
Ω
Accuracy on analog output
Max. error: 0.8 % of full scale
Resolution on analog output
8 bit
The analog output is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Control card, RS-485 serial communication:
Terminal number
68 (P,TX+, RX+), 69 (N,TX-, RX-)
Terminal number 61
Common for terminals 68 and 69
The RS-485 serial communication circuit is functionally seated from other central circuits and galvanically isolated from the supply voltage (PELV).
8 General Specifications and Troubleshooting
VLT
®
HVAC Drive Design Guide
170
MG.11.B9.02 - VLT
®
is a registered Danfoss trademark
8