Product Details

75kw 145A low voltage start soft starter for compressor motor

Product Description

BZ1S series AC motos intelligent soft starter is a new type of advanced starting device which involves electronic technology,microcontroller and advanced control technology.The soft starter can limit the starting current effectively at the start of asynchronous motos,and can be used on fans,water pumps and heavy load machines like conveyers and compress ors.It is the ideal replacement for voltage-limiting starting equipments like star-delta transformer and auto-induction voltage limiter.Meanwhile,the soft starter has various control modes that allow it to be controlled by keyboard,external terminals or host computer,and multiple outputs including fault relay outputs,multi-function relay outputs and analogue outputs,which facilitate its usage in various systems.

Technical specifcation

Operation	Control mode		Keyboard/extermal terminal/RS485 communication
	Starting mode		Current limiting/voltage/keavy load
	Start and stop time		Can be set digitally
	Start delay		Can be set digitally
	Emergency stop		Stop the output of the soft starter
	Limiting current		The starting current should be lower than the limiting current if the soft starter is operating under current limiting or heavy load mode
	Starting voltage		The starting voltage can be set digitally if the soft starter is operating under voltage mode
	Load control		Possibility to check accidents including belt tripping
	Autonmatic restart		Autonmatic restart after breakdown
	Fault output		Contact output AC 250V 1A ;DC30V 1A
	Multi-function relay output		Start delay, Start,Operation,Stop,Full stop restart
	Analogue output		0~20mA / 4~20mA available
Portection function	Portection of soft starter		Protecting from overload,overcurrent,overheat,unbalanced three phase,missing phase,under loading,extemal fault,etc
	Warning of soft starter		Emergency stop,under loading,restart,etc
Display	Keyboard	Operation information	Operation,stop and fault warnings during standby,start delay and starting
		Protection	Protect the parameters from being modified
Application conditions	Application category		AC-53b
	Rated insulation voltage		660V	Rated impulse withstand voltage	4KV
	Protection degree		IP20
Environment conditions	Ambient temperature		-10℃~40℃
	Storage temperature		-20℃~65℃
	Storage temperature		Maximum90%RH(No condensation)
	Ambient humidity		Below 1000m;below 5.9m/s(=0.6g)
	Altitude/vibration		Without corrosive gas,flammable gas,oil mist,dust or others
Cooling			Natural air cooling

BZ1S series soft starter

Description of external terminals

Type		Symbol	Name	Description
Main circuit		R,S,T	AC power input of the main circuit	Connect with 3-phase power supply through circuit breaker
		U,V,W	Output terminal of the soft starter	Connect with 3-phase asynchronous motor
		L1,L2,L3	Specific terminal for external bypass contactor	Connect with bypass contactor
Control power supply		12	Terminal for control power supply input	Connect with AC 220V, 50Hz
		13
Control circuit	Relay output	1	Control terminal of bypass contactor Bypass	Close after starting Capacity AC 220V 5A
		2
		3	Fault relay output Break	Active during fault(Multiple modcs available for choosing) CapacityAC 220V 5A
		4
		5	Multi-function relay output Chain	Programmable activity mode CapacityAC 220V 5A
		6
	DIGITAL input	7	External reset tenninal RET	External emergency stop signal
		8	Control terminal of emergency stop EMS	External reset signal during fault
		9	Extemal-control stop terminal STOP	Under external control mode,when STOP and COM is closed,and RUN and COM is closed,operation is active.Otherwise stop is active.
		10	External-control operation terminal RUN
		11	COM terminal of external signal COM	COM terminal of digital input
	RS485 Communication	A-	Positive signal of 485 communication	RS485communication tenminal
		B+	Negative signal of 485 communication
		GND	GND tenninal	0-20mA or 4-20mAanalogue output,that can be chosen through programming
		FM	Output termmal of current signal