5
4. NAMES AND SETTINGS OF THE PARTS
L1
L2
L3
L4
CJ
NC
NC
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
CT1
CT2
CT3
CT4
CT5
CT6
CT7
CT8
Q64TCTTBW
NC
RUN
ALM
ERR.
HBA
L1
L2
L3
L4
CJ
Q64TCTT
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
NC
NC
RUN
ALM
ERR.
3)
5)
4)
3)
5)
5)
1)
2)
1)
2)
6)
6)
CH1
CH2
CH3
CH4
CH1
CH2
CH3
CH4
Number
Name and Appearance
Description
1)
RUN LED
Indicates the operating status of the Q64TCTT(BW).
On
: Operating normally.
Off
: 5V power switched off, a watchdog timer error
occurred, or a CPU stop error occurred when the
intelligent function module switches of all channels are
set to "CLEAR".
2)
ERR LED
Indicates the error status of the Q64TCTT(BW).
On
: Hardware fault (including the case where no cold
junction compensation resistor is connected)
Flicker : Write data error occurrence
Off
: Operating normally.
3)
ALM LED
Indicates the alarm status of the Q64TCTT(BW).
On
: Alarm occurrence
Flicker : Process value (PV) is outside the measured
temperature range.
Loop wire break was detected.
Sensor is not connected.
Off
: No alarm occurrence
4)
HBA LED
Indicates the heater wire break detection status of the
Q64TCTT(BW).
On
: Heater wire break was detected.
Off
: Heater wire break is not detected.
5)
Terminal block*
Used for temperature sensor input, transistor output and current
sensor (CT) input.
6)
Cold junction temperature
compensation resistor
Used for Cold junction temperature compensation.
* : The terminal block layout depends on the module used.
The respective terminal block layouts are shown on the next page.
