K-48
Temperature Meter
K3MA-L
■
Input/Output Ratings
Relay Contact Output
Connections
■
Terminal Arrangement
■
Block Diagram
Item
Resistive load (cos
φ
= 1)
Inductive load (cos
φ
= 0.4, L/R = 7 ms)
Rated load (UL ratings)
5 A at 250 VAC, 5 A at 30 VDC
1.5 A at 250 VAC, 1.5 A at 30 VDC
Rated carry current
5 A max. (at COM terminal)
Max. contact voltage
400 VAC, 150 VDC
Max. contact current
5 A (at COM terminal)
Max. switching capacity
2,000 VA, 192 W
375 VA, 30 W
Min. permissible load
(P level, reference value)
10 mA at 5 VDC
Mechanical life
20,000,000 times min. (at a switching frequency of 1,200 time/min)
Electrical life
(at an ambient temperature of 20
°
C)
100,000 times min. (at a rated load switching frequency of 10 time/min)
Power
supply
Output
terminals
Input
terminals
+
+
+
−
100- to 240-VAC type or
24-VAC/VDC type*
(No polarity for 24-VDC
connection.)
Models with
comparative
output
For thermocouple
input
For platinum-
resistance
thermometer input
OUT1
A
B
B
A1
A2
E1
E2
E3
E4
E5
E6
E4
E5
E6
*Recommended DC power supply: eg. OMRON S8VS
Terminal No.
Name
Description
Operation power
Connects the operation power supply.
Thermocouple or platinum-resistance ther-
mometer input
Connects the thermocouple or platinum-resis-
tance thermometer input.
Outputs
Outputs the relay outputs.
A1
A2
-
E4
E6
-
E5
-
E1
E2
,
E3
-
X
5 V
12 V
Input
Input
Micro-
computer
Key
Display
Output
circuit
Contact
output (See
note.)
Constant voltage circuit
Power supply circuit
EEPROM
Note:
Relay output models only.
