STO 1. STO terminal 1 +24 V, to be connected to OP-
TAF terminal SD1+.
STO 2. STO terminal 2 +24 V, to be connected to OP-
TAF terminal SD2+.
Dout 1A. Terminal A of digital output 1.
Dout 1B. Terminal B of digital output 1.
Dout 2A. Terminal A of digital output 2.
Dout 2B. Terminal B of digital output 2.
+24 V. +24 V supply for external logic.
Din 1A. Terminal A of digital input 1.
Din 1B. Terminal B of digital input 1.
Din 2A. Terminal A of digital input 2.
Din 2B. Terminal B of digital input 2.
Din 3A. Terminal A of digital input 3.
Din 3B. Terminal B of digital input 3.
Din 4A. Terminal A of digital input 4.
Din 4B. Terminal B of digital input 4.
3.5.5 Option Board OPTBM
The OPTBM option board is similar to the OPTBL option board, but in addition, the OPTBM option board has a digital pulse TTL/HTL
type encoder interface board attached to it.
The digital pulse type encoder interface board is used to connect encoders with digital signals to the OPTBM option board. The
option board supports encoders with Transistor-Transistor Logic (TTL) and High Threshold Logic (HTL) type signals. Make sure that
the used type is correctly set during parameterization.
The digital pulse type encoder interface board is designed for HTL encoders with a voltage output type of push-pull.
From revision F onwards, the OPTBM (70CVB01957, 141X4608) board enables the use of closed-loop control. To use closed-loop
control, the OPTBM board must be installed in slot C. For further information, see 3.5.7 Closed-loop Control with OPTBM.
1 2 3 4 5 6 9 10 11 12 13 147 8
V GND + - + - + - + - + - + -
X5
X6
X3
X4
e30bi411.10
Illustration 8: The Terminals X5 and X6 of the Digital Pulse Type Encoder Interface Board
AQ319736045637en-000101 / DPD01798 | 31Danfoss A/S © 2021.06
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