EM AT04 Thermocouple module

4-channel thermocouple module

Model no

EM AT04

Article No

E 288-3AT04-0AA1

Description

4-channel thermocouple module

Dimensions WxHxD（mm）

47×100×81mm

Perfectly compatible with S7 200 Smart PLC

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Product parameters Wiring diagram Relevant information

Specification parameters	Model no	EM AT04
	Article No	E 288-3AT04-0AA1
	Description	4-channel thermocouple module

Conventional norm	Dimensions WxHxD（mm）	47×100×81mm
	Power Consumption	1.5W
	Current Consumption(SM bus)	120mA
	Current Consumption(24V DC)	40mA

Analog Input	Number of Inputs	4
	Range Rated Range (Data word） Overshoot/Undershoot Range (Data word） Overflow/underflow (Data word）	Please refer to the thermocouple selection table
	Measuring Principle	Sigma-Delta
	Resolution
	.Temperature	0.1°C / 0.1°F
	.Voltage	15 bits+ symbol bits
	Max. Voltage Resistance	±35V
	Isolation
	.Field side and logic side	500V AC
	.Field side and 24V DC side	500V AC
	.24V DC side and Logic side	500V AC
	Channel to channel Isolation	Support
	Common mode Rejection	>120dB at 120V AC
	Repeatability	±0.05％FS
	The cold end temperature error	±1.5°C
	Cable Loop Resistance (Max）	100Ω
	Diagnosis	Overflow/ underflow, circuit break, 24V DC low voltage
	Cable Length	100m, shielded twisted pair
	Rejection Frequency Selection	400Hz(2.5ms) 60Hz(16.6ms) 50Hz(20ms) 10Hz(100ms)

Remark: when 400Hz inhibition is selected, the integration time should be 10ms to ensure the resolution and precision of module. Meanwhile this selection will also suppress noise at frequency of 100Hz and 200Hz. It is recommended to use an integration time of 100ms while measuring thermocouple. Using smaller integration time will increase repeatability error of temperature reading.

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