Differences Between Single-Channel STO and Dual-Channel STO S700 Drives

This article will help you understand the differences between older S700 (S701-724) drives with single-channel STO and newer dual-channel STO S700 drives. 

As of July 2015 the S700 drives came standard with dual-channel STO. The dual-channel S700 can be operated in single-channel mode without any restrictions. The STO inputs must be jumpered between X4A/3 and X4B/6.

	Current Version		Old Version
Hardware Version	v 2.20		v 2.10
Firmware Version	v 5.18_ND0 and later		v 5.15 and earlier
STO	Dual-channel		Single-channel
Dual Use	Non Dual Use, not export controlled		Dual Use AL-3A225, export controlled
TUV	Certified		No
Safety Card	Yes		No
Wiring