DOC-0017-03-EN: AC15 Series - Hardware Installation Manual 
  DOC-0017-03-EN-B   04.04.2023   117 (125) 
 User +24V Output 
Voltage: 
20V @ 50mA 
Maximum Output 
Current: 
-  50mA (Total combined with DX1 & DX2 outputs) 
Frames 2 – 5:  
-  50mA  
 
 External +24V Auxiliary Input 
Allows for the partial power-up of the product without mains power applied, for programming of the drive 
using the DSELite programming tool through the Ethernet port. µSD Card port and digital I/O are also 
active.  
Terminal Idents: 
Input Voltage: 
24V +/-10% (up to a maximum ambient temperature of 40°C) 
24V +5 / -10% (up to a maximum ambient temperature of 45°C) 
Indicative Input Current: 
-  Control Board only (unloaded): 35mA 
Over Voltage Protection: 
Reverse Voltage 
No 
 
  STO Inputs 
STOA, STOB, referenced to 0V 
24V PELV (with energy source class 3, according to IEC 62368-1) 
25.2V (26.4V in a maximum operating ambient of 40°C) 
Recommended Input 
Voltage for Logic Low 
0V – 5V (or open circuit) 
Recommended Input 
Voltage for Logic High 
15V – 24V 
Indetermined Input 
Range: 
5V – 15V, function is undefined 
Typical Input Current: 
STO Input Operability: 
Always Active (i.e., STO cannot be disabled by the drive firmware) 
STO User Input A Logic 
Level: 
0V or open circuit = STO Activated 
24V = STO Disabled 
STO User Input B Logic 
Level: 
0V or open circuit = STO Activated 
24V = STO Disabled 
Isolation: 
Channel A & B to SELV: Galvanic Isolation. 
Channel A to Channel B: Non-isolated