ElmoMC Gold Line Digital Servo Drives-Gold Bell - Manual (Page 81)

Gold Bell Installation Guide Technical Specifications
MAN-G-BELIG (Ver. 1.004)
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81
5.6. Safe Torque Off (STO)
The Gold Bell has two STO (Safe Torque Off) inputs.
5.6.1. STO Input Interfaces – TTL Mode
Feature Details
Type of input Optically isolated
Input current for all inputs Iin = 3.8 mA @ Vin = 5 V
High-level input voltage 2.4 V < Vin < 15 V, 5 V typical
Low-level input voltage 0 V < Vin < 0.8 V
Minimum pulse width >3 ms
Figure 38: STO Input Schematic