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SDx and SDTAM modules for Micrologic
SDx and SDTAM are relay modules with two
static outputs. They send different signals
depending on the type of fault. They may
not be used together.
PB103377-20
SDx relay module with its terminal block.
PB103376-20
SDTAM relay module with its terminal block.
SDx module
The SDx module remotes the trip or alarm conditions of Compact NSX circuit
breakers equipped with electronic protection.
The SD2 output, available on all Micrologic trip units, corresponds to the overload-
trip indication.
The SD4 output, available on Micrologic 5 / 6, is assigned to:
overload pre-alarm (Micrologic 5)
b
ground-fault trip indication (Micrologic 6).
b
These two outputs automatically reset when the device is closed (turned ON).
For Micrologic 5 / 6, the SD2 and SD4 outputs can be reprogrammed to be assigned
to other types of tripping or alarm.
Output characteristics
It is possible to assign a function:
latching with a time delay. Return to the initial state occurs at the end of the time
b
delay
permanent latching. In this case, return to the initial state takes place via the
b
communication function.
Static outputs: 24 to 415 V AC / V DC; 80 mAmax.
SDTAM module
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The SDTAM module, linked to the contactor controller, opens the contactor when an
overload or other motor fault occurs, thus avoiding opening of the circuit breaker.
Micrologic 2 M
The SD4 output opens the contactor 400 ms before normal circuit-breaker opening
in the following cases:
overload (long-time protection for the trip class)
b
phase unbalance or phase loss.
b
The SD2 output serves to memorise contactor opening by SDTAM.
Micrologic 6 E-M
The SD4 output opens the contactor 400 ms before normal circuit-breaker opening
in the following cases:
overload (long-time protection for the trip class)
b
phase unbalance or phase loss
b
locked rotor
b
underload (undercurrent protection)
b
long start.
b
The SD2 output serves to memorise contactor opening by SDTAM.
Output characteristics
Output reset can be:
manual by a pushbutton included in the wiring diagram
b
automatic after an ad
j
ustable time delay (1 to 15 minutes) to take into account the
b
motor-cooling time.
Static outputs: 24 to 415 V AC / V DC; 80 mAmax.
DB115603
a
(+)
2
4 to 415
V
a
(-)
S
D4
S
D
2
S
D3
SD
x
Q
S
D1
S
DT
or output 1
P
A
L Ir
or
S
DG
or output
2
DB115604
a
(+)
2
4 to 415
V
a
(-)
SDTAM
A
uto reset (
m
n)
OFF
1
14
15
2
12
4
10
6 8
S
D1
S
D4
S
D
2
S
D3
S
DT
M
a
nu
a
l
reset
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A
I
K
A
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order
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SDx wiring diagram.
SDTAM wiring diagram with contactor control.
559E1860.indd
version: 1.0