G9SX-LM
28Pages

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Catalog excerpts

G9SX-LM - 1

Low-speed Monitoring Unit Low-speed Monitoring Function Ensures Safety for Maintenance Work • Motor rotation speed detected by Proximity Sensor. • Monitors and confirms that speed does not exceed the preset level. • Includes an Enabling Switch input for maintenance work. • Detailed LED indications enable easy fault diagnosis. • PLd/Safety Category 3 (ISO 13849-1), SIL 3 (IEC/EN 62061) certified. Be sure to read the "Precautions" on page 22 Model Number Structure Model Number Legend G9SX- □□□ □ □ -□□□ - □□ 1 2 3 4 5 6 4. Output Configuration (Auxiliary output) 1: 1 output 4: 4 outputs 5. Maximum preset value Low-Speed Monitoring Unit F10: 10Hz Expansion Unit No indicator: No OFF delay 6. Terminal block type RT: Screw terminals RC: Spring-cage terminals 1. Functions LM: Low Speed Monitoring Unit EX: Expansion Unit 2. Output Configuration (Safety instantaneous output) 2: 2 outputs 4: 4 outputs 3. Output Configuration (Safety Speed detection output) 2: 2 outputs Low-speed Monitoring Unit

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G9SX-LM - 2

Ratings Power input

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G9SX-LM - 3

* The number of G9SX-EX401-D Expansion Units not included.

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G9SX-LM - 4

Internal ConnectionG9SX-LM224-D (Low-speed Monitoring Unit) *2 Safety output control Auxiliary output control Sensor Power supply control Expansion Unit output control *1. Internal power supply circuit is not isolated. *2. Logical AND input is isolated. *3. Outputs S14 , S24, ES1, ES2, and L1 are internally redundant. G9SX-EX401-D (Expansion Unit) *1. Internal power supply circuit is not isolated. *2. Relay outputs are isolated.

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G9SX-LM - 5

G9SX-LM Wiring of Inputs and Outputs Signal Name Power supply input Description of operation The input terminals for power supply. Connect the power source to the A1 and A2 terminals. Wiring Connect the power supply plus (24 VDC) to the A1 terminal. Connect the power supply minus (GND) to the A2 terminal. Using 1 safety input channel Enabling Switch To set Safety instantaneous outputs in the ON state in the Maintenance mode, HIGH state signals must be input to both of enabling input CH1 and enabling input CH2. Otherwise Safety instantaneous outputs cannot be in the ON state. Enabling Switch...

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G9SX-LM - 6

Connecting Safety Sensors and the G9SX-LM 1. When connecting safety sensors to the G9SX-LMD, the Y1 terminal must be connected to 24VDC for enabling input channel. Or for Safety input channel, the Y2 terminal must be connected to 24 VDC. The G9SX-LMD will detect a connection error, if the Y1 or Y2 terminal is open. 2. In many cases, safety sensor outputs include an OFF-shot pulse for self diagnosis. The following condition of test pulse is applicable as safety inputs for the G9SX. • OFF-shot pulse width of the sensor, during the ON-state: 500 ps max..

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G9SX-LM - 7

Operation Functions Operation Mode Relationship between G9SX-LM outputs (safety instantaneous outputs and safety speed detection outputs) and inputs (safety input, enabling input, rotation detection input) differs depends on mode selector input status. Normal operation mode (Mode selector input M1=ON, M2=OFF) Safety instantaneous outputs and safety speed detection outputs condition turn on depending on rotation detection input condition.

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G9SX-LM - 8

G9SX-LM Connecting Expansion Units Setting Procedure (1) Reset Mode • The G9SX-EX and G9SX-EX-T Expansion Units can be connected to the G9SX-LM@) to increase the number of safety instantaneous outputs. • When the G9SX-EX-T is connected, it will operate in the same way as G9SX-EX. • A maximum of five Expansion Units can be connected to one G9SX-LM@. This may be a combination of G9SX-EX Instantaneous types and G9SX-EX-T OFF-delayed types. • Remove the terminating connector from the receptacle on the G9SX-LM@ and insert the Expansion Unit cable connector into the receptacle. Insert the...

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G9SX-LM - 9

G9SX-LM (3) Setting Logical AND Connection (5) Response performance regarding speed detection When connecting two or more Units by logical AND connection, set the logical AND connection preset switch on the Unit that is on the input side to AND. The response time of the entire system regarding speed detection can be calculated by the following formula: Ts = Tp + Tf + Tr + Tm Ts Tp Tf Tr Tm Note: 1. A setting error will occur and Unit B will lock out if the logical AND setting switch on the Unit is set to OFF. 2. Set the logical AND setting switch on Unit A to OFF or the output of Unit A...

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G9SX-LM - 10

* Refer to Fault Detection on the next page for details.

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G9SX-LM - 11

Settings indication (at power ON) Settings for G9SX-LMD can be checked by indicators for approx. 3 seconds after power ON. During the settings indication term, ERR indicator will light up, however the auxiliary error output will remain OFF.

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G9SX-LM - 12

Note: At the following, G9SX-LMD diagnoses the proximity sensors. In that case, it is not abnormal though the operation indicator of the proximity sensor blinks. • When the rotation of the cogwheel is stopping, and both proximity sensors are turning ON.

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G9SX-LM - 13

If neither sensor has detected any movement for one second or longer, G9SX-LMD will detect it a: Install proximity sensors so that one of them is turned ON when the rotation of cogwheel stops. Install one proximity sensor on the center line of the concavity width, and the other on the center of the convexity width so that one of the proximity sensors will be turned ON when the rotation of the cogwheel stops. Shape of Cogwheel and Setting of Proximity Sensors 1. Installation of proximity sensors For safe and stable detection of a rotating cogwheel, install proximity sensors according to the...

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G9SX-LM - 14

Step 1: Calculating the number of cogwheel teeth "Input frequency range” and "Low speed detection settings” of G9SX-LM@ should be considered. According to the information above, when setting the number of cogwheel teeth at "6," the values will be as mentioned below. These values are frequencies input to rotation detection input of G9SX-LM@, falling within the ranges of "Input frequency range" and "Low speed detection settings". At normal operation (high speed): 3000 rpm x 1 / 60 x 6 = 300 Hz At low speed: 60 rpm x 1 / 60 x 6 = 6 Hz Note: When the number of rotations between cogwheel and...

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