Siemens G85139 operating instructions P066, P073 ∙, P074 ∙ P076 ∙

Page 28

English

 

 

 

 

 

5. SYSTEM PARAMETERS

Parameter

 

Function

 

Range

 

Description / Notes

 

 

 

 

[Default]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P066

 

Compound braking

0 - 1

 

0 = Off

 

 

 

[1]

 

1 = On. Permits faster ramp-down times and enhances stopping

 

 

 

 

 

 

capability.

 

 

 

 

 

 

 

P073 ∙

 

DC injection braking (%)

0 - 250

 

This stops the motor by applying a DC current. This causes heat to be

 

 

 

[0]

 

generated in the motor rather than the inverter and holds the shaft

 

 

 

 

 

 

stationary until the end of the braking period. Braking is effective for the

 

 

 

 

 

 

period of time set by P003.

The DC brake can be activated using DIN1 - DIN3 (braking is active for as long as the DIN is high - see P051 - P053).

P074 ∙

P076 ∙

 

 

 

 

WARNING: Frequent use of long periods of dc injection braking

 

 

 

 

 

can cause the motor to overheat.

 

 

 

 

 

If DC injection braking is enabled via a digital input

 

 

 

 

 

then DC current is applied for as long as the digital

 

 

 

 

 

input is high. This causes heat in the motor.

 

 

 

 

 

I2t motor derating

0 - 1

 

0 = Disabled

 

[1]

 

1 = Enabled. Causes an F074 trip if the motor exceeds the I2t calculation.

 

 

 

 

The time taken to trip is dependent on the difference between the

 

 

 

 

overload current and the nominal motor current rating stored in P083 -

 

 

 

 

typically a 150% overload will result in a switch-off in 1 - 2 minutes.

 

 

 

 

WARNING: Where motor thermal protection is required, an external

 

 

 

 

 

PTC must be used.

Pulse frequency

0 - 7

 

Sets the pulse frequency (from 2 to 16 kHz) and the PWM mode. If

 

 

[0 or 4]

 

silent operation is not absolutely necessary, the losses in the inverter

 

 

 

 

as well as the RFI emissions can be reduced by selecting lower pulse

 

 

 

 

frequencies.

 

 

 

 

 

0/1 = 16 kHz (230 V default)

 

 

 

 

 

2/3 = 8 kHz

 

 

 

 

 

4/5 = 4 kHz (400 V default)

 

 

 

 

 

6/7 = 2 kHz

 

 

 

 

Note:

When P076 = 0/1, the display of the current at frequencies

 

 

 

 

 

below 10 Hz is less accurate.

400V inverters require the continuous current rating reduced for operation below 5Hz, when operating at switching frequencies greater than 4kHz and with boost values greater than 100% (P078 + P079). These are typically as follows:

Model

MM37/3- MM750/3

P076 =

0 or 1

2 or 3

50%xP083 80%xP083

G85139-H1750-U049-B

© Siemens plc 1997

26/09/97

28

 

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Contents Micromaster Safety Instructions Overview Installation Wiring Guidelines to Minimise the Effects of EMIExample of an RFI Suppression Filter Installation Ideal Installation Mechanical InstallationHazard MMxxx MMxxx/2 Model MMxxx/3 500Frame Sizes All measurements in mm 141 160 175 184 149 172 174 138 215 185 195 204 232Electrical Installation Power and Motor Connections Frame Size aSingle Phase Power ConnectionsPower and Motor Connections Frame Size B Power Connections Access Diagram Frame Size BPower and Motor Connections Frame Size C Power Connections Access Diagram Frame Size CFront Panel RS485 D-type Control ConnectionsControl Terminal Block Block Diagram Motor Overload ProtectionFront Panel Controls & Basic Operation Front Panel ControlsInitial Testing Basic OperationGeneral Refer to for a full description of each parameterStep /Action Basic Operation 10 Step GuideButton Display Operating Modes 4.1 Digital Control Analogue ControlStopping the Motor Local and Remote ControlIf the Motor Does Not Start Up Hardware Setup Parameter SettingsClosed Loop Control General DescriptionSystem Parameters P000 Function RangeOperating display Description / NotesP004 ∙ P005 ∙ P006 P007P009 ∙ FunctionP011 P012 ∙ P013 ∙ P014 ∙ P015 ∙P016 ∙ P017 ∙ P018 ∙P022 ∙ P023 ∙ P024 ∙P027 ∙ P028 ∙ P029 ∙ P031 ∙ P032 ∙ See P014P046 ∙ P047 ∙ P048 ∙ P050 P041 ∙ P042 ∙ P043 ∙ P044 ∙ P045P050 = P050 = 6 or P051 P052P053 P056P061 P062P063 P064P073 ∙ P066P074 ∙ P076 ∙ P077 Inverter output terminals with power offP079 ∙ P081 P082 P083 P084 P085 P089 ∙ P091 ∙ P112 P111P113 P121 P122P123 P124P944 P947 P958 P963 P967 P968 P970 P971 ∙ Eeprom storage controlFault Codes Fault CodeF151 F153 CauseSpecifications 16-8BB40 21-0BC40Options / Accessories Appropriate manner see .1Please contact your local Siemens sales office forSetup procedure for a simple application Supplementary InformationApplication Example USS Status CodesElectro-Magnetic Compatibility EMC Class 1 General IndustrialEMC Phenomenon StandardIEC 1000-2-4 ENV 50 Class 2 Filtered IndustrialStandard Level Environmental Aspects Model NoEMC Class Filter Class Filter Part NoUser’s Parameter Settings P702 P880P910 P918 P922 P923 P927 P928 P930 P931 P944 P947 P958 P963 P967 P968 P970 P971Bestell-Nr SE9286-4AA86
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