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MELSEC-Q
4 SETUP AND PROCEDURES BEFORE OPERATION
4.3 Part Identification Nomenclature
The name of each part of the A/D converter module is listed below.
1)
2)
3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RUN
ERR.
A/D
-10 10V
0 20mA
Q64AD-GH
17
18
ALM
V+
C
H
2
C
H
3
C
H
4
V-
I+
SLD
V+
V-
I+
SLD
V+
V-
I+
SLD
V+
V-
I+
SLD
C
H
1
Q64AD-GH Q62AD-DGH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RUN
ERR.
Q62AD-DGH
17
18
ALM
CH1
P
I/CHK+
CHK-
CH2
P
I/CHK+
CHK-
1)
2)
3
4)
5)
IN
24VDC
(FG)
4 20mA
Number
Name and
appearance
Description
1) RUN LED
Displays the operating status of the A/D converter module.
On : Normal operation
Flickering : During offset/gain setting mode
Off : 5V power supply interrupted, watch dog timer
error or module exchangeable status during
online module change bled
2) ERR. LED
Displays the error status of the A/D converter module.
On : Error
(A/D conversion continues.)
Flickering : Error
(A/D conversion stops.)
Off : Normal operation
3) ALM LED
Displays the warning status of the A/D converter module.
On : An alarm (process alarm, rate alarm) is being
generated.
Flickering : An input signal error is being generated.
Off : Normal operation
4)
Check terminals
(Q62AD-DGH only)
Terminal used to check the analog input current value.
(See Section 4.4.2)
5)
External supply
power terminal
(Q62AD-DGH only)
Terminal to connect 24VDC external supply power.
Check the error code for details.
POINT
When two or more errors have occurred, the latest error found by the A/D converter
module is displayed on the LED.
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