Led; Itest Button - ABB Tmax T7 Operating Instructions Manual

2.3.2.

LED

The following table shows how the LEDs are managed in accordance with the IEC standard 60073 (and clause 4.2.3.2 in particular).
2 to 4 red leds are available for checking the protections: the number of leds depends on the way the protection release and
protections installed have been configured.
The led of protection L can also come on in the orange colour, thereby providing further information.
All the led combinations and the corresponding information are given in the table below.
Type of information
TC error or TC disconnected
CS error or disconnected
Rating Plug/Installation error
Protection timer error
Last trip
(2)
Test button pressed and no
failure detected
(3)
Hardware Trip
(4)
L pre-alarm
Configuration error
(6)
Settings inconsistency
Normal operation of the relea-
se
(7)
CB Undefined or
CB status error
(8)
(1) Rating plug disconnected or In > Iu.
(2) The led of the protection that has tripped or is being timed comes on to display the information. If it is the last trip, the led
remains on for 2 sec or with fixed light if power source is external (from PR030/B).
(3) The information is displayed with all the leds on for as long as the test button remains depressed, or for 2 seconds if it is
pressed once.
(4) If enabled, the hardware trip causes the CB to open within 1 sec. It activates in the case of "Cs Error" or "Rating plug Error",
or when the protection of Ne is "ON" in the 3P circuit-breaker without Ne ext (wiring error).
The cause of tripping (CS Error, Rating Plug Error) is displayed in the presence of Vaux and/or PR030/B (connected during
the event).
The generic "Hw trip" signal remains in the absence of Vaux and/or PR030/B and is displayed by pressing the "I-test" key.
(5) Orange L led and red I led on.
(6) Installed values differ from those stored by the protection release: installation required (see sect. 2.6.1).
(7) In the absence of other information, "normal operation" is signalled 3s after the protection release has been turned on. In the
case of units BT030-USB, Ekip T&P and PR010/T, the "normal operation" signal can be disabled, but in this case, the "unit
on" (Alive LED OFF) signal will no longer be activated.
(8) Signalling with the SACE Emax X1 CB, current reading > 0.1 In and CB in Open state.
WARNING: the leds only function if the protection release is on: make sure that the minimum power supply
conditions have been complied with in order to read the signals.
2.3.3.

iTest button

The itest button can be used for different functions:
- with the protection release off, it allows the last event recorded to be checked (when pressed for about 1 second). The function
is guaranteed for 48 hours after switch-off (absence of internal or external power supply).
- with the protection release energized by PR030/B alone and with the CB open, it allows installation on the CB to be performed
(see sect. 2.6.1).
- with the protection release energized by PR030/B and the CB closed, it allows performance of the LED test (when pressed for
3 seconds) and the trip coil operation test (when pressed for 7 seconds) with consequent opening of the CB.
- It allows the Trip signal to be reset (when pressed for about 1 second) after a trip, with the protection release on.
WARNING: in the case of operating temperatures between -40°C and -25°C, in versions where this is envisaged,
the information only remains stored for 24 hours.
B0431
Model
Flashing slowly
Flashing fast (2Hz)
(0,5Hz)
All Single All
LEDs LED LEDs


(1)

B1751
LED flashing
with two 0.5 sec
pulses every 2 sec
All Single
Single LED
LEDs LED




Apparatus
Emax X1-Tmax T7-Tmax T8
Doc. no.
LED flashing
with one
LED on permanently
pulse every
3 sec
All
Single LED
LEDs


1SDH000587R0002
Single LED

 (5) 

Scale
Page No
10/66