Danfoss MCX20B2 User Manual

© Danfoss | DCS (vt) | 2020.10
AN320819413085en-000401 | 3
Technical specifications
Power supply
• 21 – 265 V AC, 50/60 Hz. Maximum power consumption: 15 W. Insulation between power supply and the extra-low voltage: reinforced
• 40 – 230 V DC
I/O TYPE NUM SPECIFICATIONS
Analog
inputs
Total number: 16 on MCX20B2; 10 on MCX15B2
Analog Input type selectable via software
Max 13.5 V input voltage
Do not connect voltage sources without current limitation (overall 80 mA)
to analog inputs while unit is not powered
Open circuit HW diagnostics available for all analog inputs
NTC
0 / 1 V
0 / 5 V
0 / 10 V
PT1000
16 (MCX20B2)
10 (MCX15B2)
AI1 to AI16 on MCX20B2
AI1 to AI10 on MCX15B2
NTC, default 10 kΩ at 25 °C, Beta 3435
0/xV type: impedance is greater than 1 MΩ
ON/OFF
0 / 20 mA
4 / 20 mA
10 (MCX20B2)
6 (MCX15B2)
AI1 to AI6, AI11 to AI14 on MCX20B2
AI1 to AI6 on MCX15B2
100 Ωs as measuring resistance for current measurements.
The inputs can be used to sense voltage free contacts with contact
cleaning current 10 mA
Auxiliary Supplies 15 V+ and 5 V+
5 V+ max: 200 mA (total on all outputs)
15 V+ max: 200 mA (total on all outputs)
All power outputs are protected against short circuit and have an
automatic recovery from overload condition.
Digital
inputs
Total number: 22
Digital Input type selectable via software between 24 V AC or voltage free
Voltage free contacts
or 24 V AC
18 DI5 to DI22
As the inputs are not isolated, caution has to be used when applying 24
V AC: the same polarity of the supply MUST always be used on COM/GND
connection.
Counting function with max frequency of 16.6 Hz (30 ms minimum pulse
time)
24 V opto-insulated 4 DI1, DI2, DI3, DI4
Inputs opto isolated, 24 V AC 50/60 Hz or 24 V DC
Rated current: 5 mA @24 V AC
230 V opto-insulated 4 DIH1, DIH2, DIH3, DIH4
Inputs opto isolated, 86 – 265 V AC / 50/60 Hz
Reinforced isolation
Rated current: 2,5 mA @ 265 V AC
Note: when the 230 V AC DH1 input is used, the corresponding 24 V DI1
input is not available anymore; the same for the couple of inputs DIH2
and DI2, DIH3 and DI3, DIH4 and DI4
Analog
outputs
Total number: 6
0 / 10 V 6 AO1, AO2, AO3, AO4, AO5, AO6
Analog Outputs 0/10 V, galvanically isolated, minimum load 1K Ω (10 mA)
for each output
PWM-PPM 2 AO5, AO6
Asynchronous PWM
Voltage output: max V
LO
= 0.6 V, min V
HI
= 6.5 V
Frequency range 15Hz…1kHz
Synchronous PWM and PPM
Voltage output: max V
LO
= 0.6 V, min V
HI
= 6.5 V
Frequency: Mains frequency x2

Danfoss MCX20B2 Specifications

General

Brand	Danfoss
Model	MCX20B2
Category	Controller
Language	English