Siemens G85139 operating instructions Motor Overload Protection, Block Diagram

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2. INSTALLATION

English

2.3.5 Motor Overload Protection

When operated below rated speed, the cooling effect of fans fitted to the motor shaft is reduced. Consequentially, most motors require de-rating for continuous operation at low frequencies. To ensure that motors are protected against overheating under these conditions, a PTC temperature sensor must be fitted to the motor and connected to the inverter control terminals as shown in Figure 7.

Note: To enable the trip function, set parameter P051, P052 or P053 =19.

8

MOTOR

PTC

7

1kΩ

Inverter Control Terminals

9

Figure 7: Motor Overload PTC Connection

2.3.6 Block Diagram

	≥	4.7 kΩ		+10V
			1	+10V
			1
V: 0 - 10 V			2	0V
V: 0 - 10 V	OR	AIN+	2
2 - 10 V	OR	AIN+
		AIN-	3	AD
				AD

			4
–
24 V
+		DIN1
		DIN1
		DIN2	5
		DIN2
		DIN3	6
		DIN3
OR			7
Power Supply for				+15V
PI Feedback			8	+15V
PI Feedback			8
Transducer				0V
or other load.			9	0V
or other load.

	RL1	RL1B	10
		RL1C	11

	PE
	1/3 AC 230 V
	3 AC 380 - 500 V	SI
	PE	L/L1, N/L2
	PE	or
		or
		L/L1, N/L2, L3
Jog	~
	~
	P
	RS485
CPU
		3 ~

PE

U, V, W

		M
Figure 8: Block Diagram
© Siemens plc 1997		G85139-H1750-U049-B
	13	26/09/97
	13

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Contents Micromaster Safety Instructions Overview Wiring Guidelines to Minimise the Effects of EMI InstallationExample of an RFI Suppression Filter Installation Ideal Installation Mechanical InstallationHazard MMxxx/3 500 MMxxx MMxxx/2 ModelFrame Sizes All measurements in mm 141 160 175 184 149 172 174 138 215 185 195 204 232Power and Motor Connections Frame Size a Electrical InstallationPower Connections Single PhasePower Connections Access Diagram Frame Size B Power and Motor Connections Frame Size BPower Connections Access Diagram Frame Size C Power and Motor Connections Frame Size CFront Panel RS485 D-type Control ConnectionsControl Terminal Block Motor Overload Protection Block DiagramFront Panel Controls Front Panel Controls & Basic OperationBasic Operation Initial TestingGeneral Refer to for a full description of each parameterStep /Action Basic Operation 10 Step GuideButton Display Analogue Control Operating Modes 4.1 Digital ControlStopping the Motor Local and Remote ControlIf the Motor Does Not Start Up Parameter Settings Hardware SetupClosed Loop Control General DescriptionSystem Parameters Function Range P000Operating display Description / NotesP005 ∙ P006 P007 P004 ∙P009 ∙ FunctionP012 ∙ P013 ∙ P014 ∙ P015 ∙ P011P016 ∙ P017 ∙ P018 ∙P023 ∙ P024 ∙ P022 ∙P027 ∙ P028 ∙ P029 ∙ P031 ∙ P032 ∙ See P014P046 ∙ P047 ∙ P048 ∙ P050 P041 ∙ P042 ∙ P043 ∙ P044 ∙ P045P050 = P050 = 6 or P052 P051P053 P056P062 P061P063 P064P073 ∙ P066P074 ∙ P076 ∙ P077 Inverter output terminals with power offP079 ∙ P081 P082 P083 P084 P085 P089 ∙ P091 ∙ P112 P111P113 P122 P121P123 P124P944 P971 ∙ Eeprom storage control P947 P958 P963 P967 P968 P970Fault Code Fault CodesF151 F153 Cause16-8BB40 21-0BC40 SpecificationsAppropriate manner see .1 Options / AccessoriesPlease contact your local Siemens sales office forSupplementary Information Setup procedure for a simple applicationApplication Example USS Status CodesClass 1 General Industrial Electro-Magnetic Compatibility EMCEMC Phenomenon StandardIEC 1000-2-4 ENV 50 Class 2 Filtered IndustrialStandard Level Model No Environmental AspectsEMC Class Filter Class Filter Part NoP702 P880 User’s Parameter SettingsP910 P918 P922 P923 P927 P928 P930 P931 P944 P947 P958 P963 P967 P968 P970 P971Bestell-Nr SE9286-4AA86