Chapter 3 Electrical Wiring|VP3000 
96 
 
4.  Analog input can be read and written normally 
5.  When Digital I/O uses external input, the 24 V
DC
 power 
supplies normally (refer to external power Sink / Source 
mode) 
⚫ Input voltage range: 24V ± 5% 
NOTE: the following functions cannot work 
Relay output, I/O extension card and PLC function 
24V auxiliary power input 
common 
Default short circuit of STO1-STO2-S24V (disable STO function). Only provide Source 
trigger mode. 
Built-in STO/SIL3 according to IEC61800-5-2, EN 61508 SIL3/ EN ISO 13849-1 PLe 
STO1–SCM; STO2–SCM ON: voltage ≥ 15 V
DC 
STO1–SCM; STO2–SCM OFF: voltage ≤ 5 V
DC 
S24V–SCM only use for STO1 and STO2 circuit 
STO1, STO2 and S24V common 
PIN1, 2, 7, 8: Reserve          PIN3, 6: SGND            PIN4: SG-            PIN5: SG+                                   
NOTE: When the drive input side is connected to USB (not connected to the RST main power 
supply), it mainly provides parameter reading, writing and software burning function, other 
functions (including control terminals) cannot be used.   
3-4-3 Calendar Battery Installation 
To ensure the calendar function is normal, check and install the CR2032 battery and adjust the time 
before use. Follow the following steps to install the battery: 
1.  Press and hold the top tab of the keypad panel and pull forward (outward) to remove it.