Bypass Soft Starter Motor Control & Protection YCQR8

General

The main function of the built-in bypass soft starter is to reduce the pressure on the motor during startup by controlling the voltage and current changes, thereby increasing startup efficiency and extending the motor’s lifespan. The built-in bypass soft starter typically includes bypass contactors and control power supplies, enabling a smooth transition to bypass mode during startup to prevent the motor from experiencing excessive current and voltage shocks.

Type designation

Operating conditions

1. Incoming line power supply: AC 380V ± 5% 50/60 Hz 2. Power supply is applicable: mouse cage three-phase asynchronous motor 3. Cooling mode: forced air cooling 4. App licable temperature: -10°C ~ ± 40°C ,1°C,2%, + 50°C 5. App licable humidity: 90% without frost 6. Place of use: No corrosive gas without conductive dust indoor is well ventilated 7. Elevation vibration: The altitude is below 3000 meters, and the vibration power device is below 0.5G

Technical data

Classification	Terminal markings	Terminal name	Function Description
Contact out put(assive)	12	Start to the topNo delay inputOut  (closed)	The built-in bypass soft starter of YCQR8 series is adapted for power ranging
	34	Initiate a mission Lingshi (closed)	Supports multiple starting methods,including current-limiting start and voltage ramp start.It is also capable of applying programmable jog start andstart current limiting under each method.
	56	Fault occurs Time(closed)	Equipped with various protection functions,including overcurrent protection, input/output phase loss protection,thyristor short-circuit protection,overheat protection,leakage detection,electronic thermal overload protection,etc.
Contact input(Active)	7	Instantaneous stop input	Some built-in bypass soft starters support MODBUS-RTU communication, allowing connection with up to 32 devices,and enabling automatic communication through setting baud rate and communication address.
	8	Soft stop input	The built-in bypass soft starter features adaptive power frequency for 50/60Hz.
	9	Start Input	Supports multiple starting methods,including current-limiting start and voltage ramp start.It is also capable of applying programmable jog start and start current limiting under each method.
	10	Public end	Equipped with various protection functions,including overcurrent protection, input/output phase loss protection,thyristor short-circuit protection,overheat protection,leakage detection,electronic thermal overload protection,etc.
Analog quantity output	1,112	Analog output	11,12 can measure the current signal that changes with the load,output 4-20mA, or 0-20mA optional,calibrationValue 100,calculation formula:D=16(lx-4). Where Ixis the actual16measured current value (mA),and D is the motorLoad current(%)(can also be understoodas the rated current corresponding to the soft start setting of 20mA)
DCvoltage output	13(24V+)10(COM)		Can carry a 0.2A DC load,with 13(24V+)as the positive pole of thepower supply and 10(COM)as the negative pole of the power supply
485 communi- cation	1,415		Pleaserefer to 485 communication protocol for details

1. Contact input terminal a. Use external terminals to control the start and stop fuctions of the soft starter. Please set the start stop control to l (keyboard+terminal). b. If remote control requirements are required, it is recommended to use the (second line) control method. c. The input terminal and common terinal of the contact signal are generally in an 0N/0rF action, which can cause interference in soft startersmotors, and wiring, therefore wiring is necessaryPlease use shielded wires for cables that are as short as possible (less than 20m). d. The wiring of control terminals must be as far away as posible from the wiring of the main cireuit. 0therwise, it may cause erroneous actionsdue to interference.   2. External control wiring method 3. Relay and remote control wiring diagram K is the normally closed point for connecting other protective devices (such as thermal protectors), which is short circuited when leaving the factory.

Wiring diagram

Overall and mounting dimensions(mm)

Model number	W1	H1	D
YCQR8-22KW-37KWAC220V	150	285	195
YCQR8-45KW-55KWAC220V	210	370	240
YCQR8-75KW-115KWAC220V	260	540	255
YCQR8-132KW-160KWAC220V	300	635	275
YCQR8-185KW-220KWAC220V	400	730	295
YCQR8-22KW-75KWAC380V	150	285	195
YCQR8-90KW-115KWAC380V	210	370	240
YCQR8-132KW-220KWAC380V	260	540	255
YCQR8-250KW-350KWAC380V	300	635	275
YCQR8-400KW-500KWAC380V	400	730	295