Nmark SSaM Hardware Manual
Installation and Configuration
2.4.1. Emergency Stop Sense Input (TB102)
The ESTOP sense input is used to monitor the state of an external safety circuit only. This state is indicated
by the software and may be used to facilitate system restart. This ESTOP sense input is not intended to be a
complete safety system.
W A R N I N G : The user is responsible for assessing operator risk levels and designing the
external safety circuits appropriately.
The ESTOP input is scaled for an input voltage of 5-24 volts.
If the ESTOP bit is enabled in the FaultMask axis parameter, the ESTOP input must be driven to prevent the
ESTOP fault condition.
Figure 2-7:
ESTOP Sense Input (TB102)
Table 2-11:
TB102B ESTOP Pinout
Pin #
Label Description
In/Out/Bi
7
ES+
Emergency Stop Digital Input +
Input
8
ES-
Emergency Stop Digital Input -
Input
N O T E :
Connecting the ESTOP input to a relay or other noise producing device requires the use of noise
suppression devices such as those in
. These devices are applied across the switched coil to
suppress transient voltages.
Table 2-12:
Electrical Noise Suppression Devices
Device
Aerotech P/N
Third Party P/N
RC (.1uf / 200 ohm) Network
EIC00240
Electrocube RG1782-8
Varistor
EID00160
Littelfuse V250LA40A
www.aerotech.com
Chapter 2
29
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