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 -10 to +10 V (scaleable)
Input resistance, Ri: approx 10 kΩ
Max. voltage ± 20 V
Current mode Switch S201/switch S202 = ON (I)
Current level 0/4 to 20 mA (scaleable)
Input resistance, Ri 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 100 Hz
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Digital Output
Programmable digital/pulse outputs 2
Terminal number 27, 29
1)
Voltage level at digital/frequency output 0-24 V
Max. output current (sink or source) 40 mA
Max. load at frequency output 1 kΩ
Max. capacitive load at frequency output 10 nF
Minimum output frequency at frequency output 0 Hz
Maximum output frequency at frequency output 32 kHz
Accuracy of frequency output Max. error: 0.1 % of full scale
Resolution of frequency outputs 12 bit
1)
Terminal 27 and 29 can also be programmed as input. The digital output is galvanically isolated from the supply voltage
(PELV) and other high-voltage terminals.
Analog Output
Number of programmable analog outputs 1
Terminal number 42
Current range at analog output 0/4 to 20 mA
Max. load to common at analog output 500 Ω
Accuracy on analog output Max. error: 0.5 % of full scale
Resolution on analog output 12 bit
The analog output is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals
Control Card, 24 V DC Output
Terminal number 12, 13
Max. load 200 mA
The 24 V DC supply is galvanically isolated from the supply voltage (PELV), but has the same potential as the analog and
digital inputs and outputs.
Control Card, 10 V DC Output
Terminal number 50
Output voltage 10.5 V ± 0.5 V
Max. load 15 mA
The 10 V DC supply 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
General Specifications
Operating Instructions VLT
®
CDS302 and CDS303
158 MG34M302 - VLT
®
is a registered Danfoss trademark/Commercial Compressor
88