Signals

Logic Type

The digital inputs and outputs of this product can be wired for positive logic or negative logic.

Logic type	Active state
(1) Positive logic	Output supplies current (source output) Current flows to the input (sink input)
(2) Negative logic	Output draws current (sink output) Current flows from the input (source input)

Logic type

Active state

(1) Positive logic

Output supplies current (source output)

Current flows to the input (sink input)

(2) Negative logic

Output draws current (sink output)

Current flows from the input (source input)

Signal inputs are protected against reverse polarity, outputs are short-circuit protected. The inputs and outputs are functionally isolated.

Digital Input Signals 24 V

When wired as positive logic, the levels of the digital inputs comply with IEC 61131-2, type 1. The electrical characteristics are also valid when wired as negative logic unless otherwise indicated.

Characteristic	Unit	Value
Input voltage - positive logic Level 0 Level 1	Vdc Vdc	-3 ... 5 15 ... 30
Input voltage - negative logic (at 24 Vdc) Level 0 Level 1	Vdc Vdc	>19 <9
Input current (at 24 Vdc)	mA	5
Debounce time (software)⁽¹⁾⁽²⁾	ms	1.5 (default value)
Hardware switching time Rising edge (level 0 -> 1) Falling edge (level 1 -> 0)	µs µs	15 150
Jitter (capture inputs)	µs	<2
(1) Adjustable via parameter (sampling period 250µs) (2) If the capture inputs are used for capture then the debounce time is not applied.

Digital Output Signals 24 V

When wired as positive logic, the levels of the digital outputs comply with IEC 61131-2. The electrical characteristics are also valid when wired as negative logic unless otherwise indicated.

Characteristic	Unit	Value
Nominal supply voltage	Vdc	24
Voltage range for supply voltage	Vdc	19.2 ... 30
Nominal output voltage - positive logic	Vdc	24
Nominal output voltage - negative logic	Vdc	0
Voltage drop at 100 mA load	Vdc	≤3
Maximum current per output	mA	100

Input Signals Safety Function STO

The inputs for the safety function STO (inputs STO_A and STO_B) can only be wired for positive logic. Observe the information provided in chapter Safety function STO ("Safe Torque Off").

Characteristic	Unit	Value
Input voltage - positive logic Level 0 Level 1	Vdc Vdc	-3 ... 5 15 ... 30
Input current (at 24 Vdc)	mA	5
Debounce time STO_A and STO_B	ms	>1
Detection of signal differences between STO_A and STO_B	s	>1
Response time of safety function STO	ms	≤10

Holding Brake Output CN11

The 24 Vdc holding brake of the BMH motor or the BSH motor can be connected to the output CN11. Data of output CN11:

Characteristic	Unit	Value
Output voltage⁽¹⁾	V	Voltage at 24 Vdc control supply CN2 minus 0.8 V
Maximum switching current	A	1.7
Energy inductive load⁽²⁾	Ws	1.5
(1) See chapter 24 Vdc Control Supply (2) Time between switch off procedures: > 1 s

Encoder Signals

The encoder signals comply with the Stegmann Hiperface specification.

Characteristic	Unit	Value
Output voltage for encoder	V	10
Output current for encoder	mA	100
SIN/COS input signal voltage range		1 V_pp with 2.5 V offset, 0.5 V_pp at 100 kHz
Input resistance	Ω	120

The output voltage is short-circuit protected and overload protected. Transmission via RS485, asynchronous, half-duplex