MITSUBISHI ELECTRIC FR-A800 (01) PDF MANUAL

MITSUBISHI ELECTRIC FR-A800 (01) PDF SUMMARY:

What is the safety stop function of the Mitsubishi Electric FR-A800/F800 inverter used for?

The safety stop function can be used to prevent the inverter from supplying rotational energy to motors. The STO (safe torque off) function specified in IEC 61800-5-2 is referred to as the safety stop function.

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What can dual input terminals S1 and S2 be used for?

They can be used to cut off the gate-drive power to the IGBT.

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What should you do to avoid an electric shock hazard when working with the inverter and motor?

Disconnect power to the inverter and verify that the main circuit capacitor voltage is zero (across terminals P and N) before performing any work on the motor (refer to your inverter’s Instruction Manual for discharging time).

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What standards do the Mitsubishi Electric FR-A800/F800 inverters comply with?

They now comply with safety integrity level 3 (SIL 3) of the IEC EC61508:2010 functional safety standard.

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What models are included in the target models?

Mitsubishi Electric FR-A800/F800 inverters.

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What is the schedule for the change in compliance for products manufactured in Japan?

This change has been made sequentially from the June 2018 production.

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What is the schedule for the change in compliance for products manufactured in China?

This change has been made sequentially from the July 2018 production.

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What should you do to ensure the system complies fully with the requirement of safety?

Make a system-level risk assessment. Mitsubishi Electric Corporation cannot assume responsibility for any system to comply with safety standards.

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What standards and categories do the safety stop function of the Mitsubishi Electric FR-A800-R2R, FR-A800-ELV, and FR-A800M inverter meet?

Safety Integrity Level (SIL) 2: ISO13849-1:2015 Category 3/PLd IEC62061:2021 / IEC61800-5-2:2016 / IEC61508:2010 SIL2 IEC61800-5-2:2016 Stop category 0

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What conditions and environment should the safety stop function of the Mitsubishi Electric FR-A800/F800 inverter be used under?

Item	Condition
Surrounding air temperature	LD, ND, HD*1: -10°C to +50°C (non-freezing)*2
	SLD: -10°C to +40°C (non-freezing)*2
Storage temperature	-20°C to +65°C*3
Ambient humidity	With circuit board coating (conforming to IEC 60721-3-3:1994 3C2/3S2): 95% RH or less (non-condensing)
	Without circuit board coating: 90% RH or less (non-condensing)
Vibration	5.9 m/s² *4 or less at 10 to 55 Hz (directions of X, Y, Z axes)
Altitude	Maximum 2500 m 25
Atmosphere	Indoors (free from corrosive gas, flammable gas, oil mist, dust and dirt)
Overvoltage category	III or lower
Pollution degree	Il or lower
Mounting	Wall mounting / vertical orientation
*1	The ND and HD ratings can be selected only for the FR-A800 inverter.
*2	Environment conditions for FR-A800M are different from Table 2. Refer to the following Table 3.
*3	Temperature applicable for a short time, e.g. in transit.
*4	2.9 m/s² or less for the FR-A840-04320(160K) / FR-F840-04320(185K) or higher.
*5	For the installation at an altitude above 1,000 m, derate the rated current 3% per 500 m.

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What are the environment conditions for FR-A800M?

Item	Condition
Surrounding air temperature	ND: -10°C to +40°C (non-freezing)
	SLD: -10°C to +40°C (non-freezing)
Altitude	Maximum 4000 m *5

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What precautions should be taken during installation?

• Ensure the safety relay unit and the FR-A800/F800 inverter are mounted closely in an enclosure meeting IP54 and all interconnection wiring is short and protected against open and short circuit faults. Refer ISO/IEC13849-2.

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What are the safety-related terminals?

Terminal symbol	Terminal name	Terminal function description	Rating*1
S1	Safety stop input (Channel 1)	For input of safety stop channel 1 Between S1 and SIC OFF: In safety stop mode ON: Other than the safety stop mode	Input resistance: 4.7 kΩ, input current: 4 to 6 mADC (with 24 VDC input)
S2	Safety stop input (Channel 2)	For input of safety stop channel 2 Between S2 and SIC OFF: In safety stop mode ON: Other than the safety stop mode	Input resistance: 4.7 kΩ, input current: 4 to 6 mADC (with 24 VDC input)
SIC	Safety stop input terminal common	Common terminal for terminal S1 and terminal S2	–
So (SO)	Safety monitor output (open collector output)	For output for failure detection and alarm (Open collector output) Between So (SO) and SOC OFF: Failure or alarm detected ON: No failure detected Note: Terminal SO (SO) cannot be used for safety signals in a safety system.	Permissible load: 24 VDC (27 VDC at maximum), 0.1 A (The voltage drop is 3.4 V at maximum while the signal is ON.)
SOC	Safety monitor output terminal common	Common terminal for terminal So (SO)	–

*1 Specifications for conforming to safety standards.

*2 ON: The transistor is conducted. OFF: The transistor is not conducted.

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What actions should be taken to avoid an electric shock hazard?

• Insert the magnetic contactor (MC) between power source and inverter.
• Open the contact of MC and keep away from the inverter for discharging time (refer to your inverter’s Instruction Manual for information) before performing any work on the inverter.
• Verify that the voltage on the bus capacitors has discharged before measuring the DC bus voltage between terminals P(+) and N(-) or at test points (refer to your inverter’s Instruction Manual for locations). The voltage must be zero.

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What is required to meet safety standards when using the FR-A800/F800 inverter?

A safety relay module compliant with ISO13849-1 safety category 3 or higher shall be used in conjunction with the FR-A800/F800 inverter. In addition, all other components in the safety stop loop shall be ‘safety approved’ types.

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How often should the safety stop function be checked?

Check the safety stop function at least once per year. To comply with SIL 3, the safety stop function must be checked at least once in three months.

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When else should the safety stop function be checked?

Check the safety stop function at system installation, any software changes, and parameter setting changes.

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What wiring and ferrule terminal specifications are required?

Cable gauge (mm²)	Ferrule terminal model*1	Crimping tool name*1
0.3	AI 0,34-10TQ
0.5	AI 0,5-10WH
0.75	AI 0,75-10GY	CRIMPFOX 6
1	AI 1-10RD
1.25 / 1.5	AI 1,5-10BK
0.75 (for two wires)	AI TWIN 2 X 0,75-10GY

*1 Ferrule terminals and the tool are distributed by Phoenix Contact Co., Ltd.

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Where are the shorting wires installed?

The shorting wires are installed between terminals S1/S2 and PC and between terminals SIC and SD in the initial status.

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What should you do before connecting the wires for the safety stop function to terminals S1, S2, and SIC?

Remove the shorting wires.

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What is recommended to prevent restart of the inverter when the power is restored after a power failure?

3-wire connection is recommended for the START/STOP control. In case of 2-wire connection and using latching type switch to short between STF and SD/PC for starting, ensure the compliance with safety standards for the restarting when the inverter power is restored after a power failure.

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Truth table of safety related signals:

Input power	Internal safety circuit status	Input terminal*1, *2	Output terminal	Output signal *8,*9, *10	Inverter running status	Operation panel indication
		S1	S2	So (SO)	SAFE	E.SAF*6
OFF	Normal	ON	ON	OFF	Output shutoff (Safe state)	Not displayed
ON	Normal	ON	ON	ON*3	OFF	Drive enabled
	Normal	ON	OFF	OFF*4	OFF*4	Output shutoff (Safe state)
	Normal	OFF	ON	OFF*4	OFF*4	Output shutoff (Safe state)
	Normal	OFF	OFF	ON*3	ON*3	Output shutoff (Safe state)
	Fault	ON	ON	OFF	OFF	Output shutoff (Safe state)
	Fault	ON	OFF	OFF	OFF	Output shutoff (Safe state)
	Fault	OFF	ON	OFF	OFF	Output shutoff (Safe state)
	Fault	OFF	OFF	OFF	OFF	Output shutoff (Safe state)

*1 The terminal ON state shows that the terminal is conducted (the line is closed), and the OFF state shows that the terminal is not conducted (the line is open).

*2 When not using the safety stop function, short across terminals S1 and PC, S2 and PC, and SIC and SD to use the inverter. (In the initial status, terminals S1 and PC, S2 and PC, and SIC and SD are respectively shorted with shorting wires.)

*3 If any of the faults shown in the following table occurs, terminal So (SO) and the SAFE signal turn OFF.

*4 When the internal safety circuit is operated normally (no faults occurs), terminal So (SO) and the SAFE signal remains ON until “E.SAF” is displayed. Terminal So (SO) and the SAFE signal turns OFF when “E.SAF” is displayed.

*5 “SA” is displayed when terminals S1 and S2 are identified as OFF due to a fault occurred in the internal safety circuit.

*6 If another fault occurs when the fault E.SAF occurs, the other fault indication may be displayed.

*7 If another warning occurs when the warning SA occurs, the other warning indication may be displayed.

*8 The ON/OFF state of the output signal is the one for the positive logic. The ON and OFF are reversed for the negative logic.

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What should be done if a failure is detected, and the FR-A800/F800 inverter outputs a fault signal and ‘E.SAF’ is indicated at the display?

1. Check that the input signal logic is the same between S1-SIC and S2-SIC. If these are different, correct the input signal and reset the FR-A800/F800 inverter.
2. Disconnect the wires from terminals S1, S2, and SIC, then reset or turn OFF and ON the power. If the ‘SA’ is indicated on the operation panel, there is a failure in the system except for the FR-A800/F800 inverter. When ‘E.SAF’ is indicated and a fault signal is output, a fault may be occurring in the FR-A800/F800 inverter.

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What happens if the FR-A800/F800 inverter outputs a fault signal (SA, E.SAF) at power-ON?

Take the action described above.

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How can you check the operation of the safety stop function?

1. Change and check the I/O state between S1-SIC and S2-SIC shown in Table 7.
2. If the inverter operation differs from the one shown in Table 7, the FR-A800/F800 may have a fault.
3. If the inverter operates as described in Table 7, check the system performance. Press the emergency switch, press the start/restart button while a failure is detected (So (SO) -SOC opened), and so on.
4. Finally clear the fault history of the FR-A800/F800 inverter (see the Instruction Manual for how to clear the fault history).

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What are the safety parameters of FR-A800/F800?

Parameter	Value (SIL 2)	Value (SIL 3)
PFDAVG	6.10×10-4	6.10×10-4
PFHD	6.90×10-9	6.90×10-9
PL	d	e
MTTFD	660 years	100 years
DCAVG	60%	90%