S811+ Operating Configuration
S811+ Soft Starter
MN03900001E—November 2012
37
Alarm-No-Trip Option
The Alarm-No-Trip option is intended for use with
applications that have motor run-to-destruction protocols in
the application specifications. This feature allows the S811+
to Start/Run the motor under the most severe of conditions
with minimal motor protections and will Start/Run until;
A) the S811+ can no longer maintain effective control of
the load, and/or;
B) catastrophic motor failure occurs.
Enabling the Alarm-No-Trip parameter from the Protections
Menu will dramatically change how the S811+ reacts to fault
conditions, defeating some of the normal protection
protocols of the S811+. Alarm-No-Trip functionality must be
thoroughly understood before enabling this feature.
Note:
User settable parameters that have been disabled in
the Protections Menu will also disable the
Alarm-No-Trip Fault(s) in table (1).
Alarm-No-Trip functionality will respond in accordance with
the protocols listed in tables (1), (2) and (3).
Fault Warnings may be displayed on the DIM or the network
connection. Fault Warnings will not Trip the S811+.
Note:
The Alarm-No-Trip terminal signal is active low. This
means that any time the 24 Vdc signal falls below
5 Vdc, the Alarm-No-Trip option will be enabled.
When the Alarm-No-Trip option is enabled, only faults critical
to motor control are effective. These faults are noted in table
(1) below:
(1) Alarm-No-Trip Faults
(1) S811+ Alarm-No-Trip Fault Trip protocol:
Condition
1.
Alarm-No-Trip feature is enabled;
2.
One or more faults noted in table (1) are active.
Action
1.
Motor not running = S811+ Inhibits motor START/RUN
function.
2.
Motor running, Top of Ramp = S811+ conducts Fault Trip
action, motor stop.
Code
Alarm-No-Trip Fault Trip Parameters
*
Watchdog
*
Watchdog Reset
*
FRam
*
Comm Failure
*
Flash CRC
5
Pole Overtemp
58
SCR Not Firing
59
Shorted SCR
18
SCR Instantaneous Overcurrent
60
SCR Overcurrent