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.
4.4.6 Digital Outputs
Number of digital outputs
2
Terminals 42 and 45
Terminal number
42, 45
(1)
Voltage level at digital output
17 V
Maximum output current at digital output
20 mA
The load resistor at digital output
1 kΩ
1
Terminals 42 and 45 can also be programmed as analog output.
The digital outputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
4.4.7 Relay Outputs, Enclosure Sizes H3–H5
Programmable relay output
2
Relay 01 and 02
01–03 (NC), 01–02 (NO), 04–06 (NC), 04–05 (NO)
Maximum terminal load (AC-1)
(1)
on 01–02/04–05 (NO) (Resistive
load)
250 V AC, 3 A
Maximum terminal load (AC-15)
(1)
on 01–02/04–05 (NO) (Induc-
tive load @ cosφ 0.4)
250 V AC, 0.2 A
Maximum terminal load (DC-1)
(1)
on 01–02/04–05 (NO) (Resistive
load)
30 V DC, 2 A
Maximum terminal load (DC-13)
(1)
on 01–02/04–05 (NO) (Induc-
tive load)
24 V DC, 0.1 A
Maximum terminal load (AC-1)
(1)
on 01–03/04–06 (NC) (Resistive
load)
250 V AC, 3 A
Maximum terminal load (AC-15)
(1)
on 01–03/04–06 (NC) (Inductive
load @ cosφ 0.4)
250 V AC, 0.2 A
Maximum terminal load (DC-1)
(1)
on 01–03/04–06 (NC) (Resistive
load)
30 V DC, 2 A
Minimum terminal load on 01–03 (NC), 01–02 (NO)
24 V DC 10 mA, 24 V AC 20 mA
Environment according to EN 60664-1
Overvoltage category III/pollution degree 2
1
IEC 60947 parts 4 and 5. Endurance of the relay varies with different load type, switching current, ambient temperature, drive configuration, work-
ing profile, and so forth. Mount a snubber circuit when connecting inductive loads to the relays.
The relay outputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
4.4.8 Relay Outputs, Enclosure Size H6
Programmable relay output
2
AJ330233902305en-000201 / 130R0596
30 | Danfoss A/S © 2021.05
Specifications
VLT® Compressor Drive CDS 803
Design Guide
