3UG3501 datasheet(12/114 Pages) ETC2

12 / 114 page

SIMOCODE 3UF Motor Management and Control Devices

SIMOCODE pro 3UF7

motor management and control devices

7/12

Siemens LV 1 T · 2006

Monitoring additional process variables over analog inputs

(0/4 ... 20 mA)1)2)

• The analog module enables SIMOCODE pro to measure

additional process variables and monitor them. A pump can,

for example, be protected against dry running in this manner

with level monitoring or the degree of pollution of a filter can

be measured using a differential pressure transducer. When a

specified level is undershot, the pump can be deactivated

and when a specified differential pressure is overshot, the filter

can be cleaned.

• SIMOCODE pro supports two-step monitoring of the corre-

sponding process variable for freely selectable upper and

lower current limit values. The response of SIMOCODE pro

can be freely configured and delayed if it reaches an alarm or

tripping threshold.

Phase sequence detection3)

• By detecting the phase sequence, SIMOCODE pro is able to

make a statement about the direction of rotation of a motor. If

the direction is incorrect, this can be reported or it can result

in immediate shutdown of the affected motor.

Monitoring of operating hours, downtime and number of starts

• In order to prevent plant downtime caused by motor failure

due to excessive motor operating times (wear) or excessive

motor downtimes, SIMOCODE pro can monitor the operating

hours and downtime of a motor. When an adjustable limit value

is violated, a message or alarm can be generated which can

indicate that the corresponding motor must be serviced or

replaced. After the motor has been replaced, the operating

hours and downtimes can be reset, for example.

• To avoid excessive thermal loads and early wear of the motor,

it is possible to limit the number of motor startups for a

specifiable period. Alarms can indicate that only a small

number of possible starts remain.

Flexible motor control implemented with software

Many typical motor control functions have been predefined in

SIMOCODE pro and are available for use:

• Direct-on-line and reversing starters

• Wye-delta starters (also with direction reversal)1)

• Two speeds, motors with separate windings (pole-changing

switch); also with direction reversal1)

• Two speeds, motors with separate Dahlander windings

(also with direction reversal)1)

• Slide control1)

• Solenoid valve actuation1)

• Actuation of a circuit-breaker (MCCB)

• Actuation of a 3RW soft starter also with direction reversal1)

These control programs already include all the software

interlocks and logic operations required for operation of the

required motor functions.

It is also monitored whether the current checkback of the motor

feeder corresponds with the control command. If not,

SIMOCODE pro opens the motor contactor and generates an

alarm indication.

Depending on the application, motor control can be switched

over or carried out simultaneously from several control stations,

e.g.:

• From the I&C system through PROFIBUS DP

• From a PC/PG through PROFIBUS DP

• From the control cabinet door through the operator panel

• From a PC/PG on the system interface through

SIMOCODE pro

• From a local control station on the motor. In this case, the

buttons, switches and indicator lights are connected to the

inputs and outputs of SIMOCODE pro.

Regardless of whether a control command is sent to SIMOCODE

pro via PROFIBUS DP using the operator module or via the

buttons connected to the binary SIMOCODE pro inputs,

SIMOCODE pro can execute these control commands

simultaneously or in accordance with the enabled commands

defined during configuration.

These predefined control functions can also be flexibly adapted

to each customized configuration of a motor feeder by means of

freely configurable logic modules (truth tables, counters, timers,

edge evaluation etc.).

In addition, special standard functions are stored in

SIMOCODE pro which can also be used to extend the protection

and control functions, e.g.:

• Power failure monitoring1) for automatic, time-staggered

restart of motors following a network failure e.g. with the help

of a separate voltage relay (voltage controller).

• Fault signaling modules for external faults with or without

manual or automatic acknowledgement for generating internal

messages or for tripping SIMOCODE pro in response to freely

definable events (e.g. overspeed monitor has been

activated). Designations/names can also be assigned to the

external faults which are stored in the device and which are

therefore also available to the I&C system.

• Emergency start function and reset of the thermal memory of

SIMOCODE pro after tripping, i.e. immediate restart is

possible (important, for example, for pumps used to

extinguish fires).

• Test function for the load feeder circuit when the main control

switch is open to test the control circuit while the main circuit

is de-energized.

Detailed operational, service and diagnostics data

SIMOCODE pro provides a variety of operating, service and

diagnostic data, such as:

Operating data

• The switching state of the motor (On, Off, clockwise, counter-

clockwise, fast, slow) is derived from the current flow in the

main circuit, so checkbacks are not required through auxiliary

contacts from circuit-breakers and contactors

• Current in phase 1, 2, 3 and maximum current in % of the set

current

• Voltage in phases 1, 2, 3 in V3)

• Active power in W3)

•Apparent power in VA3)

• Power factor in %3)

• Phase unbalance in %

• Phase sequence3)

• Temperature in sensor circuits 1, 2, 3 and maximum

temperature in °C1)4)

• Current values of the analog signals1)2)

• Time until tripping in sec.

• Temperature rise for motor model in %

• Remaining cooling time of the motor in sec. etc.

Service data

• Motor operating hours (can be reset)

• Motor stop times (can be reset)

• Number of motor starts (can be reset)

• Number of remaining permissible motor starts

• Number of overload trips (can be reset)

• Internal comments, stored in the device for each feeder,

e.g. notes for maintenance events etc.

1) Using basic unit 2.

2) An additional analog module is required.

3) Using basic unit 2 with current/voltage measuring module.

4) An additional temperature module is required.

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