CMD-2ED-SA Controller Electrical Specifications


Parameter 

Min 

Max 

Units 

Main Power Input 

 

+12 

+24 

V 

- 

300 

mA 

Driver Power Input 

+12 

+24 

V 

- 

2.5 

A 

Opto-supply Power Input 

+12 

+24 

V 

-

250

mA

Digital Input Forward Diode Current *

4 

8

mA 

Digital Output Collector Voltage +

+12 

+24 

 

Digital Output Sink Current ±

- 

25 

mA 

Operating Temperature ≥

-20 

+80 

°C 

Storage Temperature ≥

-55 

+150 

°C 

 


* Internally current limited

+ From Opto-supply Power Input

± Each output, no internally current limit

≥ Based on component rating


10 Thermal specifications

Parameter

Value

Notes

Operating ambient temperature

0 to +40 °C

2.0 A per phase on both axes†


0 to +50 °C

phase current ≤ 1.2 A on both axes†

Storage temperature

−40 to +85 °C

design value from component ratings†

Cooling

natural convection; the drivers are coupled to the enclosure base by thermal pads


Major heat sources (design values)†:

Source

Estimated dissipation

Conditions

Motor drivers

≈ 2.0 W each

2.0 A peak per phase, hot


≈ 0.45 W each

0.95 A (factory setting)

Motor-side 5 V regulator

≈ 1.2 W (up to 2.4 W)

24 V motor supply

Logic supply regulators

≈ 1.8 W

12 V logic supply, full load

Opto input circuits

≈ 1.0 W

15 V opto supply, all 16 inputs on

Fuses and reverse-protection MOSFETs

≈ 0.6–0.9 W

3.0 A motor supply

Derating and mounting. Mount the unit with the base against a metal surface where possible: the drivers are coupled to the base by thermal pads and the base acts as the heat sink. Leave free air around the cover. The motor-supply fuses derate with temperature (Section 9.1).