SIMATIC S7-1500, analog input module for cell voltage measurement, AI 24xCVM HF, up to 24 bit resolution, accuracy: 0.1%, 24 channels in groups of 12, insulation voltage: 600 V DC, diagnostics, hardware interrupts, calibrate in RUN mode; delivery including infeed element, shielding bracket and shield terminal: front connector (push-in) included note: Module is not suitable for regular voltage measurement of +/- 5 V! General information Product type designation AI 24xCVM HF HW functional status from FS01 Firmware version V1.0.0 ● FW update possible Yes Product function ● I&M data Yes; I&M0 to I&M3 ● Isochronous mode No ● Measuring range scalable No ● Scalable measured values No ● Adjustment of measuring range No Engineering with ● STEP 7 configurable/integrated from version V5.5 SP3 / - ● PROFIBUS from GSD version/GSD revision not supported Operating mode ● Oversampling No ● MSI Yes CiR - Configuration in RUN Reparameterization possible in RUN Yes Calibration possible in RUN Yes Input current Current consumption, max. 0 mA Power Power consumption from the backplane bus 2.8 W Power loss Power loss, typ. 2.1 W Address area Address space per module ● Inputs 48 byte ● Outputs 0 byte Analog inputs Number of analog inputs 24 ● For voltage measurement 24; at ±3.5 V; 16 channels at ± 5 V permissible input voltage for voltage input (destruction limit), max. 160 V Analog input with oversampling No Standardization of measured values No Input ranges (rated values), voltages ● -5 V to +5 V Yes — Input resistance (-5 V to +5 V) 1 MΩ; connected to +27 V for open-circuit detection Cable length ● shielded, max. 200 m Analog value generation for the inputs Measurement principle integrating Integration and conversion time/resolution per channel ● Resolution with overrange (bit including sign), max. 16 bit; 24 bits in floating-point format ● Integration time, parameterizable Yes ● Integration time (ms) 2,5 / 16,67 / 20 / 100 ms ● Basic conversion time, including integration time (ms) 10 / 24 / 28 / 109 ms — additional conversion time for wire-break monitoring 35 ms; once per module cycle ● Basic execution time of the module (all channels released) Channel 0 and 12, 1 and 13, etc. measure in pairs simultaneously. The slower channel of each pair determines the basic execution time of the channel pair. The basic execution time of the module is calculated by adding the basic conversion times of the channel pairs. Smoothing of measured values ● Number of smoothing levels 4 ● Parameterizable Yes ● Step: None Yes ● Step: low Yes ● Step: Medium Yes ● Step: High Yes Encoder Connection of signal encoders ● for voltage measurement Yes ● for current measurement as 2-wire transducer No ● for current measurement as 4-wire transducer No ● for resistance measurement with two-wire connection No ● for resistance measurement with three-wire connection No ● for resistance measurement with four-wire connection No Errors/accuracies Linearity error (relative to input range), (+/-) 0.02 % Temperature error (relative to input range), (+/-) 0.005 %/K Crosstalk between the inputs, max. -80 dB Repeat accuracy in steady state at 25 °C (relative to input range), (+/-) 0.02 % note regarding accuracy at temperatures below 0 °C, the figures for operating error and temperature error are doubled Operational error limit in overall temperature range ● Voltage, relative to input range, (+/-) 0.1 % Basic error limit (operational limit at 25 °C) ● Voltage, relative to input range, (+/-) 0.05 % Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency ● Series mode interference (peak value of interference < rated value of input range), min. 36 dB ● Common mode interference, min. 70 dB Interrupts/diagnostics/status information Diagnostics function Yes Alarms ● Diagnostic alarm Yes ● Limit value alarm Yes; two upper and two lower limit values in each case Diagnoses ● Monitoring the supply voltage Yes ● Wire break Yes ● Short-circuit No ● Group error No ● Overflow/Underflow Yes Diagnostics indication LED ● RUN LED Yes; green LED ● ERROR LED Yes; red LED ● MAINT LED No ● Monitoring of the supply voltage (PWR-LED) No ● Channel status display Yes; green LED ● for channel diagnostics Yes; red LED ● for module diagnostics Yes; red LED Potential separation Potential separation channels ● between the channels No ● between the channels, in groups of 12 ● between the channels and backplane bus Yes Permissible potential difference Between the inputs and MANA (UCM) 21 V DC between M internally and the inputs 600 V DC; insulation rated for 1000 V DC basic insulation: between the channels and the backplane bus Isolation Isolation tested with 4700 V DC between channels and backplane bus Standards, approvals, certificates Siemens Eco Profile (SEP) Siemens EcoTech Suitable for applications according to AMS 2750 No Suitable for applications according to CQI-9 No Ecological footprint ● environmental product declaration Yes Global warming potential — global warming potential, (total) [CO2 eq] 38.6 kg — global warming potential, (during production) [CO2 eq] 14.4 kg — global warming potential, (during operation) [CO2 eq] 24.6 kg — global warming potential, (after end of life cycle) [CO2 eq]
