M54128 Mitsubishi, M54128 Datasheet - Page 2

• Manufacturer Part Number: M54128
• Description: EARTH LEAKAGE CURRENT DETECTOR
• Manufacturer: Mitsubishi

PIN FUNCTION DESCRIPTION
Leakage detection, abnormal voltage detection, SCR drive circuits
Common
L
10
11
12
13
14
7
6
9
8
5
2
4
3
1
Pin No.
FP
14
13
12
11
10
2
1
3
4
5
6
7
9
8
Pin name
V
V
I
GND
P
V
I
T
T
P
OFF
I
T
S
REF
LKI
BLI
S
CC
SAV
REF
RC1
RC2
SEL
TDC
CRT
C
Power supply
Output pin of internal constant-voltage circuit. Connects to capacitor for decoupling.
Connects to resistor which sets constant current of each internal circuit. Approx. 1.3V.
Grounding
When in normal use, connect the pin to V
ground the pin. Circuit current can be reduced. Ground I
Input reference level pin of the leakage detection circuit. Approx. 2.7V.
Another input pin of the leakage detection circuit.
Connects to capacitor for integrating output signals of the leakage input signal level discriminator.
Connects to condeser for removing noise.
Logic function switching pin used when detecting leakage.
When the pin is grounded, S
negative input.
W
This IC will be restored to the initial condition after the specified period if :
leakage input signal does not continue ; abnormal voltage input signal does not continue ; or
leakage/abnormal voltage is detected and SCR becomes ON.
The pin connects to capacitor for time settinng of this function.
Input pin of the abnormal voltage detection circuit.
Connects to capacitor for time setting of the abnormal voltage detection circuit.
Output pin for drive a SCR.
hen it is connected to V
CC
CRT
pin, S
operates with the logic flow of negative input
CRT
operates with the logic flow of negative input
CC
pin. When the abnormal voltage detection function is not in use,
Function
EARTH LEAKAGE CURRENT DETECTOR
MITSUBISHI <CONTROL / DRIVER IC>
BLI
pin and T
TDC
pin also.
M54128L/FP
positive input
positive input.