SIEMENS S7-300 FM 355 closed-loop control module

FM 355 controller moduleFM 355 controller module

  • 4-channel closed-loop controller module for universal control tasks
  • Can be used for temperature, pressure, flow and level controls
  • Convenient online self-optimization for temperature controls
  • Predefined controller structures
  • 2 control algorithms
  • 2 versions:
    • FM 355 C as continuous controller;
    • FM 355 S as step or pulse controller
  • With 4 analog outputs (FM 355 C) or 8 digital outputs (FM 355 S) for direct control of the most common actuators
  • Continuation of control mode also possible with CPU stop or failure
Product No. / Product Description FM 355 controller module Ordering data
6ES7355-0VH10-0AE0
SIMATIC S7-300, CONROL MODULE FM 355 C, 4 CHANNELS, CONTIN. 4 AI + 8 DI + 4 AO INCL. MULTI-LANG CONFIG. PACK., MANUAL AND GETTING STARTED (GER/EN/FR/IT) ON CD-ROM
6ES7355-1VH10-0AE0
SIMATIC S7-300, CONTROL MODULE FM 355 S, 4 CHANNELS, STEP AND PULSE, 4 AI + 8 DI + 8 DO INCL. MULTI-LANG CONFIG. PACK., MANUAL AND GETTING STARTED (GER/EN/FR/IT) ON CD-ROM
Application

The FM 355 closed-loop control module is the intelligent 4-channel closed-loop control module for universal closed-loop control tasks.

It may be used for

  • Temperature control
  • Pressure control
  • Flow control
  • Level control

in the following areas:

  • General mechanical engineering
  • Plant building
  • Industrial furnaces
  • Cooling and heating equipment
  • Food and drinks industry
  • Rubber and plastics machines
  • Chemical and process industries
  • Glass and ceramics
  • Wood and paper industry

The FM 355 is available in two versions:

  • FM 355 C as continuous controller with 4 analog outputs for controlling analog actuators
  • FM 355 S as step or pulse controller with 8 digital outputs for controlling motorized (integrating) actuators or binary-controlled actuators (e.g., electrical strip heaters and tube heaters)

The FM 355 can be used in SIMATIC S7-300 and ET 200M with S7-300/400 as a DP master.

Design

  • User-friendly wiring:
    Encoders and actuators are connected via two separate 20-pin front connectors.
  • LEDs:
    • Red LED for displaying faults (group fault)
    • Green LEDs for digital input status display
    • Yellow LED for indicating backup operation
  • High-performance measured data acquisition:
    The module has 4 analog inputs for analog value acquisition and disturbance variable input as well as 1 additional analog input for temperature compensation when used with thermocouples.
  • Various encoders can be used:
    thermocouples, Pt 100, voltage encoders, current encoders.
  • Extensive I/O:
    • FM 355 C: 4 analog outputs for analog actuators
    • FM 355 S: 8 digital outputs for motorized actuators or binary controlled actuators. The 24 V DC supply for the actuators is applied externally.
Configuring package

The configuring package supplied on CD contains:

  • Standard function blocks for exchanging data with the CPU
  • Parameterization screen forms
  • Getting Started – A short guide to startup
  • Manual
Function

The FM 355 has 4 separate closed-loop control channels. The controllers display the following 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
  • 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 software

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
  • The operation of, for example, setpoint and manual control outputs
  • The monitoring of, for example, actual value and setpoint value

FUZ_355

The reading and writing of the parameters of all temperature controllers;
the transfer of identified control parameters.

FORCE355

FM 355 startup:
Supports the simulation (forcing) of the analog and digital input values

READ_355

Supports the reading of analog and digital input values

CH_DIAG

FM 355 startup:
Reads others channel-specific parameters from the module

PID_PAR

Supports the online modification of other parameters that cannot be entered with the FB PID_FM

CJ_T_PAR

Supports the online modification of the parameterized reference temperature

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

Article number

6ES7355-0VH10-0AE0

6ES7355-1VH10-0AE0

SIMATIC S7-300, CONROL MODULE

SIMATIC S7-300, CONTROL MODULE

Supply voltage

Load voltage L+

  • ● Rated value (DC)

24 V

24 V

  • ● 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 loss

Power loss, typ.

6.5 W

5.5 W

Power loss, max.

7.8 W

6.9 W

Digital inputs

Number of digital inputs

8

8

Input characteristic curve in accordance with IEC 61131, type 2

Yes

Yes

Input voltage

  • ● Rated value (DC)

24 V

24 V

  • ● for signal “0”

-3 to +5V

-3 to +5V

  • ● for signal “1”

13 to 30V

13 to 30V

Input current

  • ● for signal “1”, typ.

7 mA

7 mA

Cable length

  • ● shielded, max.

1 000 m

1 000 m

  • ● unshielded, max.

600 m

600 m

Digital outputs

Number of digital outputs

8

Short-circuit protection

Yes; Electronic

Limitation of inductive shutdown voltage to

L+ (-1.5 V)

Controlling a digital input

Yes

Switching capacity of the outputs

  • ● on lamp load, max.

5 W

Load resistance range

  • ● lower limit

240 Ω

  • ● upper limit

4 kΩ

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 0 to 60 °C, min.

5 mA

  • ● for signal “1” permissible range for 0 to 60 °C, max.

150 mA

  • ● for signal “0” residual current, max.

0.5 mA

Parallel switching of two outputs

  • ● for logic links

Yes

Switching frequency

  • ● with resistive load, max.

100 Hz

  • ● with inductive load, max.

0.5 Hz

  • ● on lamp load, max.

100 Hz

Total current of the outputs (per group)

all mounting positions

  • — up to 60 °C, max.

400 mA

Cable length

  • ● shielded, max.

1 000 m

  • ● unshielded, max.

600 m

Analog inputs

Number of analog inputs

4

4

permissible input voltage for voltage input (destruction limit), max.

30 V

30 V

permissible input current for current input (destruction limit), max.

40 mA

40 mA

Input ranges

  • ● Voltage

Yes

Yes

  • ● Current

Yes

Yes

  • ● Thermocouple

Yes

Yes

  • ● Resistance thermometer

Yes

Yes

Input ranges (rated values), voltages

  • ● 0 to +10 V

Yes

Yes

  • ● Input resistance (0 to 10 V)

100 kΩ

100 kΩ

  • ● -1.75 V to +11.75 V

Yes

Yes

  • ● Input resistance (-1.75 V to +11.75 V)

100 kΩ

100 kΩ

  • ● -80 mV to +80 mV

Yes

Yes

  • ● Input resistance (-80 mV to +80 mV)

10 MΩ

10 MΩ

Input ranges (rated values), currents

  • ● 0 to 20 mA

Yes

Yes

  • ● Input resistance (0 to 20 mA)

50 Ω

50 Ω

  • ● 0 to 23.5 mA

Yes

Yes

  • ● Input resistance (0 to 23.5 mA)

50 kΩ

50 Ω

  • ● -3.5 mA to +23.5 mA

Yes

Yes

  • ● Input resistance (-3.5 mA to +23.5 mA)

50 Ω

50 Ω

  • ● 4 mA to 20 mA

Yes

Yes

  • ● Input resistance (4 mA to 20 mA)

50 kΩ

50 Ω

Input ranges (rated values), thermocouples

  • ● Type B

Yes

Yes

  • ● Input resistance (Type B)

10 MΩ

10 MΩ

  • ● Type J

Yes

Yes

  • ● Input resistance (type J)

10 MΩ

10 MΩ

  • ● Type K

Yes

Yes

  • ● Input resistance (Type K)

10 MΩ

10 MΩ

  • ● Type R

Yes

Yes

  • ● Input resistance (Type R)

10 MΩ

10 MΩ

  • ● Type S

Yes

Yes

  • ● Input resistance (Type S)

10 MΩ

10 MΩ

Input ranges (rated values), resistance thermometer

  • ● Pt 100

Yes

Yes

  • ● Input resistance (Pt 100)

10 MΩ

10 MΩ

Thermocouple (TC)

Temperature compensation

  • — internal temperature compensation

Yes

Yes

  • — external temperature compensation with Pt100

Yes

Yes

Characteristic linearization

  • ● parameterizable

Yes

Yes

  • — for thermocouples

Type B, J, K, R, S

Type B, J, K, R, S

  • — for resistance thermometer

Pt100 (standard)

Pt100 (standard)

Cable length

  • ● shielded, max.

200 m; 50 m at 80 mV and thermocouples

200 m; 50 m at 80 mV and thermocouples

Analog outputs

Number of analog outputs

4

Voltage output, short-circuit protection

Yes

Voltage output, short-circuit current, max.

25 mA

Current output, no-load voltage, max.

18 V

Output ranges, voltage

  • ● 0 to 10 V

Yes

  • ● -10 V to +10 V

Yes

Output ranges, current

  • ● 0 to 20 mA

Yes

  • ● 4 mA to 20 mA

Yes

Connection of actuators

  • ● for voltage output two-wire connection

Yes

  • ● for current output two-wire connection

Yes

Load impedance (in rated range of output)

  • ● with voltage outputs, min.

1 kΩ

  • ● with voltage outputs, capacitive load, max.

1 µF

  • ● with current outputs, max.

500 Ω

  • ● with current outputs, inductive load, max.

1 mH

Cable length

  • ● shielded, max.

200 m; 50 m at 80 mV and thermocouples

Analog value generation for the inputs

Measurement principle

integrating

integrating

Integration and conversion time/resolution per channel

  • ● Resolution with overrange (bit including sign), max.

14 bit; 12 bit or 14 bit, parameterizable

14 bit; 12 bit or 14 bit, parameterizable

  • ● Conversion time (per channel)

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 Hz and 60 Hz

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 Hz and 60 Hz

Analog value generation for the outputs

Settling time

  • ● for resistive load

0.1 ms

  • ● for capacitive load

3.3 ms

  • ● for inductive load

0.5 ms

Encoder

Connection of signal encoders

  • ● for voltage measurement

Yes

Yes

  • ● for current measurement as 4-wire transducer

Yes

Yes

Connectable encoders

  • ● 2-wire sensor

Yes

Yes

  • — permissible quiescent current (2-wire sensor), max.

1.5 mA

1.5 mA

Errors/accuracies

Linearity error (relative to input range), (+/-)

0.05 %

0.05 %

Temperature error (relative to input range), (+/-)

0.005 %/K

0.005 %/K

Linearity error (relative to output range), (+/-)

0.05 %

Temperature error (relative to output range), (+/-)

0.02 %/K

Operational error limit in overall temperature range

  • ● Voltage, relative to input range, (+/-)

0.6 %; ±0.6 to ±1%

0.6 %; ±0.6 to ±1%

  • ● Current, relative to input range, (+/-)

0.6 %; ±0.6 to ±1%

0.6 %; ±0.6 to ±1%

  • ● Resistance thermometer, relative to input range, (+/-)

0.6 %; ±0.6 to ±1%

0.6 %; ±0.6 to ±1%

  • ● Voltage, relative to output range, (+/-)

0.5 %

  • ● Current, relative to output range, (+/-)

0.6 %

Basic error limit (operational limit at 25 °C)

  • ● Voltage, relative to input range, (+/-)

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 %; 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 range, (+/-)

0.4 %; ±0.4 to ±0.6 %

0.4 %; ±0.4 to ±0.6 %

  • ● Resistance thermometer, relative to input range, (+/-)

0.4 %; ±0.4 to ±0.6 %

0.4 %; ±0.4 to ±0.6 %

  • ● Voltage, relative to output range, (+/-)

0.3 %

  • ● Current, relative to output range, (+/-)

0.5 %

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.

40 dB

40 dB

  • ● Common mode interference (USS < 2.5 V) , min.

70 dB

70 dB

Interrupts/diagnostics/status information

Substitute values connectable

Yes; Parameterizable

Yes; Parameterizable

Integrated Functions

Control technology

  • ● Number of closed-loop controllers

4

4

Potential separation

Potential separation controller

  • ● between the channels

No

No

  • ● between the channels and backplane bus

Yes; Optocoupler

Yes; Optocoupler

Permissible potential difference

Between the inputs and MANA (UCM)

2.5 V DC

2.5 V DC

Isolation

Isolation tested 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

Weights

Weight, approx.

470 g

470 g