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SM 1238 Energy Meter 480V AC

technical data

		SIMATIC S7-1200, analog input, SM 1238 Energy Meter 480V AC, electric table module, used for data acquisition, in 1 and 3 phase grid (TN,TT) to 480V AC; Current range: 1A,5A; collect voltage, current, phase angle, power, energy value, frequency; Channel diagnosis
general information
product Type mark		SM 1238,AI meter 480 VAC
firmware version		V2.0
product Features
● voltage measurement		yes
-Transformer		yes
● current measurement		yes
-No current transformer		no
-Current Transformer		yes
● Energy Measurement		yes
● frequency measurement		yes
● power measurement		yes
● active power measurement		yes
● reactive power measurement		yes
● I & M data		yes; I & M 0
● clock synchronization mode		no
with package
● STEP 7 TIA port, configurable/integrated, from version		V13 SP1
operation mode
● Periodic measurement		yes
● non-periodic measurement		yes
● non-cyclic measurement access		yes
● fixed defined measurement group		yes
● freely defined measurement groups		yes
CiR configuration in operation
you can change parameter assignment in RUN mode.		Yes
can be calibrated in RUN mode		yes
installation method/installation
installation location		horizontal and vertical
power supply voltage
power Specifications		power supply via voltage measurement channel L1
voltage type of power supply		AC 100 - 277V
allowed range, lower limit (AC)		90V
allowed range, upper limit (AC)		293v
power Frequency
● allowed range, lower limit		47Hz
● allowed range, upper limit		63Hz
power loss
power loss, typical		0.6W
address range
address space of each module
● address space of each module, maximum		124 bytes; 112 bytes input/12 bytes Output
time
runtime counter
● existence		yes
analog input
cycle time (all channels), typical value		50 ms; The time when all measured values and calculated values (periodic and non-periodic data) are continuously updated.
Alarm/diagnosis/status information
alarm
● diagnostic alarm		yes
● limit value alarm		yes
● process alarm		no
diagnostic display LED
● power supply voltage monitoring (PWR-LED)		yes
● Channel Status Display		yes; Green LED
● For Channel diagnosis		yes; Red Fn LED
● used for module diagnosis		yes; Green/red DIAG-LED
integration function
measurement function
● voltage measurement method		TRMS
● current measurement method		TRMS
● measurement collection method		no gap
● voltage waveform		sine or distortion
● buffer of measured variables		yes
● parameter length		74 byte
● measured value collection bandwidth		2 kHz; Higher harmonic: 39 / 50Hz,32 / 60Hz
measuring range
-Frequency measurement, minimum		45Hz
-Frequency measurement, maximum		65Hz
voltage measurement input
-Measurable power supply voltage between phase line and zero line		277 V
-Measurable power supply voltage between live wires		480V
-Measurable power supply voltage between phase line and zero line, minimum		90V
-Measurable power supply voltage between phase line and zero line, maximum		293v
-Measurable power supply voltage between live wires, minimum value		155V
-Measurable power supply voltage between live wires, maximum		508V
-Voltage measurement category conforms to IEC 61010-2-030		CAT II;CAT III, ensure safety level at 1.5 kV
-Internal resistance of live wire and zero wire		3.4 M?
-Power consumption of each phase line		20 mW
-Anti-shock voltage capability 1.2 / 50 & micro;s		1 kV
current measurement input
-Measurable relative current at alternating current, minimum		1%; The value of 5 A is based on the secondary rated current.
-Measurable relative current at alternating current, maximum		100%; The value of 5 A is based on the secondary rated current.
-Continuous current at alternating current, maximum allowed		5 A
-Apparent power consumption of each phase line when the measurement range is 5A		0.6 V·A
-The time period of the measured value of short-term withstand current intensity is 1s.		100 A
-Input impedance measurement range: 0 to 5 A		25 m ?; Terminal
-Zero Point suppression		optional parameters: 2 ... 250 mA, default value: 50 mA
-Surge tolerance		10 A; 1 minute
accuracy level conforms to IEC 61557-12
-Voltage measurement variable		0,2
-Current measurement variable		0,2
-Apparent power measurement variable		0.5
-Active power measurement variable		0.5
-Reactive power measurement variable		1
-Power coefficient measurement variable		0.5
-Effective work measurement variable		0.5
-Invalid work measurement variable		1
-Neutral line current measurement specifications		0.5; Calculated value
-Phase measurement variable		± 1 °; Not collected by IEC 61557-12
-Frequency measurement variable		0.05
potential isolation
potential separation of channels
● between the Channel and the backplane bus		yes; 3700V AC (type inspection) CAT III
insulation
insulation Test, use		2300V AC 1 minute long (type inspection)
environmental requirements
operating ambient temperature
● horizontal installation, minimum		-20°C
● horizontal installation, maximum		60°C
● vertical installation, minimum		-20°C
● vertical installation, maximum		50°C
size
width		45 mm
height		100 mm
depth		75 mm
weight
weight (excluding packaging)		165g
other
data for selecting current transformers
● Current Transformer load power x/1A, minimum		depending on cable length and cross section, see Product Manual
● Current Transformer load power x/5A, minimum		depending on cable length and cross section, see Product Manual

Update time：20240927153745