FM 355 CONTROLLER MODULE Function The FM 355 has 4 separate closed-loop control channels. The controllers display the features: Standard control structures (depending on the control structure selected, a number of different types of control may be interconnected in a single structure): Fixed setpoint control, Cascade control, Ratio control, 3-component control. Choice of modes: Automatic, manual, safety mode, follow-up mode and backup mode. Sampling time (depending on the resolution of the analog inputs and the compensation input): For 12 bits:20 ms to 100 ms. For 14 bits: 100 ms to 500 ms (depending on the number of enabled analog inputs) 2 control algorithms Self-optimizing temperature algorithm (see below), PID algorithm; User-friendly controller optimization: The self-optimization function for the temperature algorithm is stored on the module and can be automatically activated in the case of setpoint changes of more than 12 %; the PID control algorithm is optimized using the parameterization screen forms in the configuring package Page 1217 Mar 2008 Siemens ITS
Backup mode: In the event of CPU failure or CPU Stop, the controller can continue to operate independently. The "backup mode" function is used to set a parameterizable safety setpoint or a parameterizable safety control variable. Disturbance variable input: the analog inputs can be used for feedforward compensation in addition to actual value acquisition, if desired. New: Wider range of applications thanks to changes in function blocks. New function blocks are widening the possible applications for the module. The most important changes are: All Fuzzy temperature controller parameters can be read out and programmed More module parameters can be modified online Comparison of data between the FM and instance DB Significantly faster operation thanks to communication via I/O accesses instead of via SFC RD_REC and WR_REC Manual/Automatic changeover Manual/automatic changeover stepless or with a step change, as required Higher measurement range resolution for Pt 100 sensors. The following measurement ranges can be parameterized: -200 to +129 C or -328 to +264 F -200 to + 556 C or -328 to +1032 F -200 to +850 C or -328 to +1562 F Testing functions; Enhanced test functions support: Reading of analog and digital inputs Forcing of simulated values for analog and digital inputs Reading of channel-specific parameters Firmware update Fast and easy upgrading to the current firmware version via the Internet with the help of the parameterization Page 1218 software Mar 2008 Siemens ITS
Function blocks PID_FM Closed-loop control with the FM 355: The interfacing of the FM 355 with the user program supports The modification of control parameters, setpoints, control outputs 14 FUZ_355 FORCE355 READ_355 The operation of, for example, setpoint and manual control outputs The monitoring of, for example, actual value and setpoint value The reading and writing of the parameters of all temperature controllers; the transfer of identified control parameters. FM 355 startup: Supports the simulation (forcing) of the analog and digital input values Supports the reading of analog and digital input values CH_DIAG PID_PAR CJ_T_PAR FM 355 startup: Reads others channel-specific parameters from the module Supports the online modification of other parameters that cannot be entered with the FB PID_FM Supports the online modification of the parameterized reference temperature Page 1219 Mar 2008 Siemens ITS
Temperature controller with integrated self-setting The temperature controller with integrated self-setting is suitable for controlled systems where the entire process has approximately the same temperature when the setpoint is reached, as is the case in water bath controls, steam boiler controls or injection molding machines. The procedure is unsuitable for controlled systems where the temperature in a significant portion of the process still varies significantly after the setpoint has been reached, as is the case in furnace controls where the air heats up and the temperature is measured. When the air temperature has reached the setpoint, the furnace and its contents can still be cold. Parameterization A configuring package is supplied with the FM 355 that contains all the parameterization screen forms required for parameter initialization and startup. Detailed online Help is available for all screen form screen forms. The parameterization screen forms are called up from STEP 7 following installation. Technical specifications 6ES7 355-0VH10-0AE0 6ES7 355-1VH10-0AE0 Supply voltage Load voltage L+ Rated value (DC) 24 V 24 V Technical specifications Page 1220 Mar 2008 Siemens ITS
permissible range, lower limit (DC)20.4 V 20.4 V permissible range, upper limit (DC)28.8 V 28.8 V Input current from load voltage L+ (without load), max. 310 ma; Typ. 260 ma 270 ma; typ. 220 ma from backplane bus 5 V DC, max. 75 ma; typ. 50 ma 75 ma; typ. 50 ma Power losses Power loss, typ. 6.5 W 5.5 W Power loss, max. 7.8 W 6.9 W Digital inputs Number/binary inputs 8 8 Input characteristic curve acc. to IEC 1131, Type 2 Input voltage Rated value, DC 24 V 24 V for signal "0" -3 to +5 V -3 to +5 V for signal "1" 13 to 30 V 13 to 30 V Input current for signal "1", typ. 7 ma 7 ma Cable length Cable length, shielded, max. 1 000 m 1 000 m Cable length unshielded, max. 600 m 600 m Digital outputs Number/binary outputs 8 Page 1221 Mar 2008 Siemens ITS
Functionality/short-circuit strength ; Electronic Limitation of inductive shutdown L+ (-1.5 V) voltage to Lamp load, max. 5 W Controlling a digital input Output voltage for signal "1", min. L+ (-2.5 V) Output current for signal "1" rated value 100 ma for signal "1" permissible range for 5 ma 0 to 60 C, min. for signal "1" permissible range for 150 ma 0 to 60 C, max. for signal "0" residual current, 0.5 ma max. Parallel switching of 2 outputs for logic links Switching frequency with resistive load, max. 100 Hz with inductive load, max. 0.5 Hz on lamp load, max. 100 Hz Aggregate current of outputs (per group) 400 ma Page 1222 Mar 2008 Siemens ITS
up to 60 C, max. Load resistance range lower limit 240 Ω upper limit 4 kω Cable length Cable length, shielded, max. 1 000 m Cable length unshielded, max. 600 m Analog inputs Number of analog inputs 4 4 permissible input voltage for voltage30 V 30 V input (destruction limit), max. permissible input current for current 40 ma 40 ma input (destruction limit), max. Input ranges (rated values), voltages 0 to +10 V -1.75 to +11.75 V -80 mv to +80 mv Input ranges (rated values), currents 0 to 20 ma 0 to 23.5 ma -3.5 to +23.5 ma 4 to 20 ma Input ranges (rated values), thermoelements Type B Page 1223 Mar 2008 Siemens ITS
Type B Type J Type K Type R Type S Input ranges (rated values), resistance thermometers Pt 100 Thermocouple (TC) for thermocouples Type B, J, K, R, S Type B, J, K, R, S Resistance thermometer (RTD) Characteristic linearization Pt100 (standard) Pt100 (standard) for resistance thermometer Characteristic linearization Parameterizable Temperature compensation internal temperature compensation external temperature compensation with Pt100 Cable length, shielded, max. 200 m; 50 m at 80 mv200 m; 50 m at 80 and thermocouples mv and thermocouples Page 1224 Mar 2008 Siemens ITS
Analog outputs Number of analog outputs 4 Cable length, shielded, max. 200 m; 50 m at 80 mv and thermocouples Voltage output, short-circuit protection Voltage output, short-circuit current, 25 ma max. Current output, no-load voltage, 18 V max. Output ranges, voltage 0 to 10 V -10 to +10 V Output ranges, current 0 to 20 ma 4 to 20 ma Connection of actuators for voltage output 2-conductor connection for current output 2-conductor connection Load impedance (in rated range of output) with voltage outputs, min. 1 kω Page 1225 Mar 2008 Siemens ITS
with voltage outputs, capacitive 1 µf load, max. with current outputs, max. 500 Ω with current outputs, inductive load, 1 mh max. Analog value creation Measurement principle integrating integrating Integrations and conversion time/ resolution per channel Resolution with overrange (bit 14 bit; 12 or 14 bit, 14 bit; 12 or 14 bit, including sign), max. Conversion time (per channel) parameterizable 16.67 ms; for 12 bit: 16 2/3 ms for 60 Hz, 20 ms for 50 Hz; for 14 bit: 100 ms for 50 and 60 Hz Settling time for resistive load 0.2 ms 0.1 ms for capacitive load 3.3 ms 3.3 ms for inductive load 0.5 ms 0.5 ms Encoder Connection of signal encoders for voltage measurement for current measurement as 4-wire parameterizable 16.67 ms; for 12 bit: 16 2/3 ms for 60 Hz, 20 ms for 50 Hz; for 14 bit: 100 ms for 50 and 60 Hz Page 1226 Mar 2008 Siemens ITS
transducer Connectable encoders 2-wire BEROS 1.5 ma 1.5 ma permissible quiescent current (2-wire BEROS), max. Errors/accuracies Linearity error (relative to input area) +/- 0,05 % +/- 0,05 % Temperature error (relative to input +/- 0,005 %/K +/- 0,005 %/K area) Linearity error (relative to output +/- 0,05 % area) Temperature error (relative to output+/- 0,02 %/K area) Operational limit in overall temperature range Voltage, relative to input area +/- 0,6 %; +/-0.6 to +/-1% +/- 0,6 %; +/-0.6 to +/-1% Current, relative to input area +/- 0,6 %; +/-0.6 to +/- 0,6 %; +/-0.6 to +/-1% Resistance-type thermometer, +/- 0,6 %; +/-0.6 to relative to input area +/-1% Voltage, relative to output area +/- 0,5 % +/-1% +/- 0,6 %; +/-0.6 to +/-1% Page 1227 Mar 2008 Siemens ITS
Current, relative to output area +/- 0,6 % Basic error limit (operational limit at 25 C) Voltage, relative to input area +/- 0,4 %; 80 mv: +/- 0.6%; 250 to 1000 mv: +/-0.4%; 2.5 to 10 V: +/-0.6%; 3.2 to 20 ma: +/-0.5% Current, relative to input area +/- 0,4 %; +/-0.4 to +/-0.6 % Resistance-type thermometer, +/- 0,4 %; +/-0.4 to relative to input area +/-0.6 % Voltage, relative to output area +/- 0,3 % Current, relative to output area +/- 0,5 % Interference voltage suppression for f = n x (fl +/- 1%), fl = interference frequency Series mode interference (peak value of interference < rated value of input range), min. 40 db 40 db common mode voltage (USS < 2.5 70 db 70 db V), min. Interrupts/diagnostics/status information +/- 0,4 %; 80 mv: +/- 0.6%; 250 to 1000 mv: +/-0.4%; 2.5 to 10 V: +/-0.6%; 3.2 to 20 ma: +/-0.5% +/- 0,4 %; +/-0.4 to +/-0.6 % +/- 0,4 %; +/-0.4 to +/-0.6 % Page 1228 Mar 2008 Siemens ITS
Substitute values connectable ; Parameterizable ; Parameterizable Control technology Number of closed-loop controllers 4 4 Galvanic isolation Galvanic isolation controller between the channels No No between the channels and the ; Optocoupler ; Optocoupler backplane bus Permissible potential difference between inputs and MANA (UCM) 2.5 V DC 2.5 V DC between M internally and the inputs 75 VDC / 60 VAC 75 VDC / 60 VAC Isolation Isolation checked with 500 V DC 500 V DC Connection method required front connector 2x 20-pin 2x 20-pin Dimensions Width 80 mm 80 mm Height 125 mm 125 mm Depth 120 mm 120 mm Weight Weight, Page 1229 approx. 470 Mar g2008 470 g Siemens ITS