KM6640 Speed Monitoring Instrument

1Main functions

● Range selection:

In0~99999turn/Within the range of classification, there are selectable levels,Customized by the user during instrument selection, pre-set by the manufacturer.

● Display function:

Speed measurement value, alarm value, and functional information are availableLEDDisplayed on the display window. The panel indicator light is composed of light-emitting diodes of different colors, which are used to indicate the measurement status of the instrument. Within the full range, the measurement display accuracy is better than0. 1% (maximum0.3%).

● Alarm function:

Users can set their own speed alert”Value and 'Danger'”The indicator lights on the panel indicate "alert" and "danger" alarms, and the rear panel terminals provide relay outputs.

● Alarm reset function:

When an alarm occurs, the alarm reset is divided into two methods: self-locking and automatic reset; When self-locking, the alarm function is always maintained. After the monitoring situation is normal, the "reset" button needs to be pressed to reset; When resetting automatically, the alarm function will be automatically released after the monitoring situation is normal. Users can choose one of the methods when selecting instruments, which is pre-set by the manufacturer or set by the user themselves.

● Sensor power supply current limiting protection:

When a sensor power short circuit occurs accidentally during use, the current limit should be ≤30mAIt will not cause a fire and meets the safety requirements of the monitoring site.

● Record output function:

Output at the rear panel terminal4-20mAThe range of analog signals corresponding to the recorded output is the parameter

In the numerical setting function, users can adjust it themselves, and the output terminals are designed with short-circuit protection function.

● Sensor signal buffer output:

The buffered signal is the original signal of the sensor output from the rear panel terminal block.

● Fast response to overspeed alarm:

The overspeed alarm action responds quickly with a delay in response time<50ms.

Can be paired with multiple speed sensors:

Applicable sensors include speed sensors, speed switches, eddy current sensors, and various other sensors.

● Input signal frequency range:0.02Hz ~ 25KHz.

● Parameter setting function:

The functions and parameters of the instrument can be set in real-time through the buttons on the panel, with smooth and convenient operation.

2Technical specifications

● Frequency range:0.02Hz ~ 25KHz.

● Input:

sensor input Various speed sensors such as speed switches, speed sensors, eddy current sensors, etc

Input points 1point

input impedance 50KΩ

● System input/Output conversion accuracy (including sensors):

Record output ±0.3%(Full range) 25℃

digital display ±0.1%(Full range) 25℃

Record output (rear panel terminal):

4-20mA(Maximum load)500(h)

● Buffer output (rear panel terminal):

The buffered signal is the original signal of the sensor output from the rear panel terminal block.

Sensor power output: eddy current sensor -24±1V，15mAShort circuit current limit ≤30mA

speed sensor none

Speed switch +24±1V，15mAShort circuit current limit ≤20mA

● Report Police:

Alarm Setpoint danger1point,alert1point

Relay status Frequent power loss

Alarm relay output 2Group relays, each relay has (normally closed, normally open);

Contact output capacity 250VAC/7Aor30VDC/10A.

Alarm reset auto-reset,Dangerous self-locking, manual reset is required.

● Ring Environment:

Operating Temperature 0 ∽ 65℃

Storage temperature -30 ∽ 85℃

relative humidity 20 ∽95%No condensation

● Working power supply:165-265VAC，47-440HZ

● Power consumption:10W

Quality: ＜1.5KG

● Standard desktop metal chassis

3Explanation of Instrument Principle

Instrument schematic diagram:

4Display and button instructions

● Display window:

There is a display window on the front panel of the instrument panel, which is4A or5aLEDComposed of red digital display tubes, it displays monitoring values during normal monitoring of the instrument; When implementing functional operations, display functional information codes.

● Status indicator light:

On the right side of the display window on the front panel of the instrument panel, there is a setting4A light-emitting diode used to indicateLEDThe nature of displayed information, instrument functions, and alarm status are as follows:

OK green,Constant illumination indicates that the instruments, sensors, and the circuits connected to them are working normally.

call the police yellow,When the speed reaches the alarm value,This light is always on,Alarm relay action. This light is used in conjunction with the alarm status function of the instrument panel,After normal monitoring, press the reset button in the self-locking state,The light just went out. In self recovery state,This light will automatically turn off.

parking red,Used to indicate parking status,When the speed reaches the alarm value,This light is always on,Alarm relay action. This light is used in conjunction with the alarm status function of the instrument panel,After normal monitoring, press the reset button in the self-locking state,The light just went out. In self recovery state,This light will automatically turn off.

bypass Yellow, when the light is on, it indicates that when the alarm value reaches the warning or danger value, the relay will not act, otherwise the relay will act. Please refer to the parameter settings for specific usage instructions.

● Button Description

When setting parameters on the instrument, switch between different settings in sequence. Store the set parameter values in the machine and then enter the next parameter setting state.

When performing functional operations on the instrument, shift the digital loop to the left1Position;

When performing functional operations on the instrument, increase the number of the corresponding digit1；

Clear the indicator lights of the instrument for alarm status and danger while monitoring, and reset the relay. When setting parameters, exit the current parameter setting state.

5Parameter Setting and Function Usage Instructions

In the parameter setting state, the display window on the panel will show the parameter category and parameter status (parameter values) that need to be set.

SPA range 0——99999

NUT 齿数 0——60

AL alarm threshold 0——99999

AS alarm delay （0——19）S

DA danger value 0——99999

DS Dangerous delay （0——19）S

PST Relay reset mode 0 self-recovery 1 self-locking

Operation steps for parameter setting keys

When the corresponding parameter is pressed, it can be modified in the following ways

press The key can cyclically change the number of digits required to set parameter values, while the corresponding digit's digital display flashes.

press The key can increase the current flashing value1Thus, the numerical values can be adjusted from0to9Cycle changes.

After the parameter modification is completed, press the reset button.

● Instructions for setting the number of sensing bodies

When using this instrument for speed measurement, the following parameters are involved:

Z—Number of sensing bodies (number of teeth)

N- Speed（Instrument display value)

F- Input signal frequency

N=60*F/Z

6System connection and usage

Rear panel wiring diagram:

Connection of sensors:

●KM5510The speed switch can be operated bySIGTheCOMandPOW(+24V)Three terminal input, when installing the sensor, install it at a distance from the top of the gear1-3mmLeft and right distance, just fix the sensor.

●KM1100Eddy current sensors can beSIGTheCOMandPOW(-24V)Three terminal input, when installing the sensor, align the sensor with the tooth tip and measure the output voltage of the sensorout, is the midpoint-10VLeft and right, just fix the sensor. Or install the sensor at a distance from the tooth top1.5mmLeft and right distance, fixed.

●KM5520The speed sensor can beSIGandCOMInput at both ends, install the sensor at a distance from the tooth top1.5mmLeft and right distance, fixed.

Connection of terminal block:

especiallyNote:1Please do not use blank terminals.

2TheCOMandCOMDirect connection is not allowed, otherwise it may cause errors.

3The eddy current sensor and speed switch are connected to the instrument terminal using a three core shielded cable. The shielding of the shielded cable can be compatible withSHLDConnect the terminals.

4The speed sensor to the instrument terminal uses a two core shielded cable, and the shielding layer of the shielded cable can be connected toSHLDConnect the terminals.

Attention:Ground on the instrument terminal（COM）Insulation resistance between the casing and the ground500VDC≥500MΩ allows the chassis ground to be directly connected to the control screen ground.

Connection of signal transmission cables

Note:1Avoid routing signal transmission cables together with control cables and power cables.

2Install all cables in conduits or place them on cable racks.

3The recommended requirements for using a three core cable are as follows: silver plated braided cable or flat shielded copper wire (core wire is soft copper wire)

Attention: Power on first, then add the signal, otherwise it may cause unexpected fault reports

7Unpacking and Installation

After opening the instrument packaging,Each instrument has one installation bracket, one certificate of conformity, and one user manual.

The installation position and structure of the instruments on the control cabinet are shown in the following figure:

Insert the fixing rods into the installation slots on the left and right sides respectively, and then tighten them with installation screws.