Delta VFD9A0MS43ANSHA User Manual

Chapter 17 Safe Torque Off FunctionMS300 (High Speed Model)
17-3
17-2 Safe Torque Off Terminal Function Description
As mentioned earlier STO (Safe torque off) related terminal functions are described in Table 1 below.
Terminals Terminal Function Specifications
+24V
When the STO function is
not used, the STO function
can be disabled by shorting
S1 and S2 with + 24V
Output voltage range: +24V ± 10 %
Output voltage capacity: 100 mA
S1
Signal input of STO function
channel 1
S1~DCM / S2~DCM
Rated input voltage: +24 VDC ± 10 %; Max. input voltage: +30
VDC ± 10 %
Rated input current: 6.67 mA ± 10 %
STO activation mode
Input voltage level: 0 VDC < S1~DCM and S2~DCM < 5 VDC
STO response time: ≤ 20 ms (time required for S1/S2 operate
till the drive stop outputting)
STO cut-off mode
Input voltage level: 11 VDC < S1~DCM and S2~DCM < 30 VDC
S2
Signal input of STO function
channel 2
DCM
Reference ground of S1
and S2 signal
Table 1: Terminal function description
Action logic and keypad display after S1/S2 signal input are described in Table 2 below.
Signal Status
S1~DCM ON ON OFF OFF
S2~DCM ON OFF ON OFF
Drive output Ready to output
STL2 mode
(Torque output off)
STL1 mode
(Torque output off)
STO mode
(Torque output off)
Error displayed on
keypad
No error displayed STL2 STL1 STO
Table 2: Description of action logic and keypad display
 STO means channel 1 and 2 operate simultaneously and enter Safe Torque Off.
 STL1 means channel 1 operates.
 STL2 means channel 2 operates.
 STL3 means there is error detected in the internal circuit of channel 1 or channel 2.
 S1
~DCM / S2~DCM ON: means S1~ DCM / S2~DCM inputs a power supply > 11 VDC.
 S1~ DCM / S2
~DCM OFF: means S1~ DCM / S2~DCM inputs a power supply < 5 VDC.

Delta VFD9A0MS43ANSHA Specifications

General

Brand	Delta
Model	VFD9A0MS43ANSHA
Category	Controller
Language	English