Specifications and ratings, 1 general specifications, 2 ratings and performance – TOHO ELECTRONICS TTM-00BT User Manual
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8. Specifications and ratings
8.1 General specifications
Power voltage
24V DC + 10% - 15%
Power consumption
8W or less
Insulation resistance
Between inputs and outputs, 500V DC, 20M
Ω
or more
Withstand voltage
Between inputs and outputs, 500V AC, 1 minute
Temperature/ 
humidity range 
23
±
10C
°
/ 45 to 75%RH (non-condensing)
Power voltage
24V DC + 10% - 15%
Standard 
environment 
Vibration condition
0G
Temperature/ 
humidity range 
-10 to 55
°
C / 35 to 85%RH (non-condensing)
Operating 
environment 
Power voltage
24V DC + 10% - 15%
Temperature/humidity 
range 
-20 to 65
°
C / 20 to 90%RH (non-condensing, non-freezing)
Vibration condition
0.5G (10 to 55Hz, 2 hours in each of the directions X, Y, and Z as installed on a 
vertical panel) 
Impact condition
0 to 50G (directions X, Y, and Z as installed on a vertical panel, with no continuous 
impact) 
Transportation/ 
storage 
environment 
Package drop
Drop height, 60cm (once each of the six sides, free fall without a rotary motion)
Machine 
specifications 
Weight
Approx. 450g
 
 
8.2 Ratings and performance
Thermocouple input
K and J switchover (JIS C 1602-1995) 
Input resistance: 1M
Ω
or more
Effect of external resistance: 0.4
µ
V/
Ω
(0.01
°
C/
Ω
)
Burnout: Overdisplay 
Measurement precision: Measurement ±(0.3% + 1 digit) or ±2
°
C, whichever
the larger 
(to be specified under the standard environmental conditions, including the 
cold contact compensation program) 
Temperature 
input 
Input type
Resistance bulb input
Pt100/JPt100 switchover (JIS C 1604-1997) 
External resistance: 0.2
°
C/
Ω
or less (per wire)
Burnout: Overdisplay 
Bias current: approx. 2mA (flowing out of terminal A) 
Measurement precision: Measurement ±(0.3% + 1 digit) or ±0.9
°
C,
whichever the larger 
(to be specified under the standard environmental conditions) 
Sampling period
200mS (at channel 8)
Power supply
LED3
Goes on when this product is on (green)
Control output
LED15 to 22
Goes on when the control output is turned on (red)
Temperature alarm 
output 
LED4 to 11
Goes on when the temperature alarm output is turned on 
(red) 
Heater wire break 
alarm output 
LED12
Goes on (red) when there is a heater wire break (there is no 
output even if the output is turned on) 
SSR breakdown alarm 
output 
LED13
Goes on (red) when there is an SSR breakdown (there is 
output even if the output is turned off) 
Error alarm output
LED14
Goes on (red) when there is a memory error, A/D error, or 
sensor error 
LED display
LED type
Communication
LED1 
LED2 
Blinks while receiving data (green) 
Blinks while transmitting data (green) 
Output in a special state
All outputs remain off for about 10 seconds after this product is turned on. 
The control output is turned off when there is a measurement error. 
Control 
output/ 
temperature 
alarm output 
Open collector output
Output rating: 24V DC, 100mA (maximum) per point
Input voltage range
12 to 24V DC
±
10%
ON-state voltage
10.8V (min)
ON-state current
4mA (min)
OFF-state voltage
4V (max)
Voltage input
Minimum input time
500mS or more
CT input
±5% of the full span
