Page 63 - Sace Emax 2 Manual for design engineers

P. 63

ABB | SACE Emax 2
Harmonic Distortion Protection Allows an alarm to be activated in the case of distorted wavefoms.
The protection can be enabled in the Measurements menu; if enabled an alarm is activated (page 45).
IMPORTANT: the protection does not handle the trip, just the signal

T Protection T protection protects against abnormal temperatures measured and transmitted to the sensor inside the unit;
temperature verification is always active and includes three operating states:

State Temperature range [°C] Ekip Touch actions
Standard -25 < t < 70 Normal operation; display state depending on type (1)
Warnings -40 < t < -25 or 70 < t < 85 Warning led @ 0.5 Hz; display state depending on type (1)
Display off; Alarm and Warning leds @ 2 Hz; TRIP if Trip
Alarm t < -40 or t > 85
enable is activated
(1) with Ekip Touch, the display remains on within range: -20°C / +70°C; with Ekip LCD, the display remains
on within range: -30°C / +80°C
All protections enabled in the unit are active in all operating states.
The Trip Enabling parameter can be enabled in the Settings - Circuit breaker menu in order to handle an open
command if an alarm occurs (page 46).

Hardware Trip Protection Hardware Trip protects against connection errors in Ekip Touch and is available in the Settings - Circuit
breaker - Hardware Trip menu (page 45).
If enabled, with the CB closed, if one or more of these events are detected:
• current sensors disconnected (phase or external if enabled)
• Rating Plug disconnected.
• Trip Coil disconnected
• faults inside the unit
the alarm is signaled and a TRIP command is transmitted.

IMPORTANT:
• the protection trips if the error statuses persist for more than one second
• the signal is activated in the case of an alarm due to Trip coil disconnection and, in the presence
of Vaux, output YO is commanded until the Trip unit detects the CB Open state (make sure that
YO, Ekip Actuator, YO coil supply are present)

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