Parameter 

Min 

Max 

Units 

Main Power Input 

+12 

+24 

V 

- 

1.5 

A 

Opto-supply Power Input 

+12 

+24 

V 

Pulse/Direction/Enable Open Collector 

- 

+24 

V 

- 

40 

mA 

Digital Input Forward Diode Current 

- 

40 

mA 

Digital Output Collector VOltage 

- 

+24 

V 

Digital Output Sink Current 

- 

90 

mA 

Operating Temperature1 

-20 

+80 

°C 

Storage Temperature1

-55 

+150 

°C 

Parameter

Min

Typ

Max

Notes

Input voltage

12 V

24 V

24 V

Absolute maximum 24 V, set by the input PTC fuse rating

Input current, board only

—

0.15 A at 12 V0.08 A at 24 V

—

Design value†, includes 15 % margin

Input current, all three J5 5 V outputs at their fuse limit

—

—

0.62 A at 12 V0.31 A at 24 V

Design value†, includes 15 % margin

Fuse

—

—

1.5 A

Resettable PTC, in series with the input

Reverse polarity

—

—

—

Protected by a series P-channel MOSFET

Transient protection

—

—

—

Transient suppressor across the input

Rail

Source

Notes

+5 V

Step-down switching regulator from the logic supply

Also feeds the three fused 5 V outputs on J5

+3.3 V

Linear regulator from +5 V

Logic, motion controller and encoder receivers

Circuit

Protection

Logic supply (J3)

Reverse-polarity MOSFET, 1.5 A resettable PTC, transient suppressor

Field supplies (J7.3, J7.29)

0.25 A resettable PTC each; common-mode choke and transient suppressor on the general-purpose group

5 V outputs on J5

0.25 A resettable PTC each (three independent fuses)

USB (J4)

0.25 A resettable PTC on VBUS, clamp diode, ESD array on the data pair

RS-485 (J2)

Bidirectional transient suppressor across the pair, ESD array to ground, series resistors

Analog inputs

Series resistor and divider only — no clamp

Parameter

Value

Field input and output optocouplers

2500 Vrms for 1 minute (component rating)

Isolated signals

DI1–DI8, LIM1–LIM8, DO1–DO8, and the two field supply rails

Non-isolated signals

Pulse, direction, enable, sync, encoder, analog, USB and RS-485