GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 5 Signal Mapping
5-5
Applying the LAN Heartbeat Echo Feature

When controlling a dri ve over a LAN, both the controller and the drive need to

monitor and react to chan ges in the status of LAN health. The h eartbeat echo feature

in the drive provides a mechanism for this function.

The following illustrations indicate how the drive and controller obtain status on the

LAN integrity and possible configuration options.

Heartbeat Echo Function with a PLC

Series 90-30
CPU
GBC
Innovation
Series
MCL
+
-
AC
Reference FeedbackBit
1Heartbear ref, lan
(Lan_Htbt_Ref)
Heartbear fbk, lan
(Lan_Htbt_Fbk)
Controller generates the
heartbeat and monitors the echo
of it from the drive
Drive reads the heartbeat signal
generated in the controller on
Lan_Htbt_Ref and echos it back
on Lan_Htbt_Fbk
Lan_Htbt_Ref
Lan_Htbt_Fbk
Drive can be configured to
monitor heartbeat on
Lan_Htbt_Ref and alarm or trip if
the heartbeat fails to transition
Lan_Htbt_RefLan_Htbt_Fbk

Heartbeat Echo Function with an Innovation Series

Controller

Innovation
Series
MCL
+
-
AC
Reference FeedbackBit
1Heartbear ref, lan
(Lan_Htbt_Ref)
Heartbear fbk, lan
(Lan_Htbt_Fbk)
Innovation Series Controller auto
generates the heartbeat and
monitors the echo of it from the
drive in the # version of the
feedback signals
Drive reads the heartbeat signal
generated in the controller on
Lan_Htbt_Ref and echos it back
on Lan_Htbt_Fbk
Lan_Htbt_Ref
Lan_Htbt_Fbk
Drive can be configured to
monitor heartbeat on
Lan_Htbt_Ref and alarm or trip if
the heartbeat fails to transition