INVERTER A800 Plus FR-A800-LC (LIQUID COOLED TYPE) Safety Stop Function Instruction Manual CONTENTS 1. GENERAL DESCRIPTION ..........2 2. INSTALLATION AND WIRING........4 3. EXAMPLE OF SAFETY SYSTEM CONFIGURATION ..8 4. TEST AND CHECKING FAILURE ....... 13 5. SAFETY PARAMETERS OF FR-A800-LC ....14...
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The information of this manual is merely a guide for proper installation. Mitsubishi Electric Corporation. cannot assume responsibility for the compliance or the noncompliance to any code, national, local, or otherwise for the proper installation of this equipment.
GENERAL DESCRIPTION Features The safety stop function of the Mitsubishi Electric FR-A800-LC inverter can be used to prevent the inverter from supplying rotational energy to motors. Dual input terminals S1 and S2 can be used to cut off the gate-drive power to the IGBT.
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Safety stop function with SIL 3 certification The Mitsubishi Electric FR-A870-LC inverters now comply with safety integrity level 3 (SIL 3) of the IEC EC61508:2010 functional safety standard. • Target models Mitsubishi Electric FR-A870-LC inverters • Change of the compliance The Mitsubishi Electric FR-A870-LC inverters now comply with SIL 3.
Refer ISO/IEC13849-2. Installation The safety stop function of the Mitsubishi Electric FR-A800-LC inverter should be used under the following conditions and environment. Table 3 Conditions and environment for using the safety stop function...
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Warning 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. And verify that the voltage on the bus capacitors has discharged before measuring the DC bus voltage between the terminals P(+) and N(-) or at test points (refer to your inverter’s Instruction Manual for locations).
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Table 5 Truth table of safety related signals Output Internal Output Operation panel Input terminal signal Input safety Inverter ∗1 ∗2 terminal indication power circuit running status ∗8 ∗9 ∗10 status So (SO) SAFE E.SAF ∗6 ∗7 Output shutoff ⎯ ⎯...
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●Wiring and ferrule terminal specifications Table 6 Wiring and Ferrule terminal specifications Ferrule terminal model Crimping tool name Cable gauge (mm ∗1 ∗1 AI 0,34-10TQ AI 0,5-10WH 0.75 AI 0,75-10GY CRIMPFOX 6 AI 1-10RD 1.25 / 1.5 AI1,5-10BK 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.
EXAMPLE OF SAFETY SYSTEM CONFIGURATION ●FR-A800-LC configuration example(Using Safety relay module) R/L1 S/L2 T/L3 So (SO) Logic RESET START STOP STOP Gate Gate Emergency ASIC Drive r Drive r stop button IGBTs XS0 XS1 +24V COM0 COM1 Internal Safety Circuit +24V Fuse S a f e t y r e l a y module...
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FR-A800-LC Mitsubishi Electric Programmable Controller CC-Link IE Field Network Remote I/O Module (With Safety Functions) NZ2GFSS2-32D/ NZ2EXSS2-8TE Figure 4 Safety system example of the FR-A800-LC inverter NOTE • When starting up the system operation, press the RESET switch to reset the safety stop function first, then turn ON the START switch to run the motor.
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●Multiple inverter configuration example(Using Safety relay module) R/L1 S/L2 T/L3 So (SO) Logic RESET Gate Gate Emergency ASIC Drive r Drive r IGBTs stop button +24V XS0 XS1 COM0 COM1 Internal Safety Circuit +24V Fuse S a f e t y r e l a y module M E L S E C Q S 9 0 S R 2 S N-Q FR-A800-LC R/L1 S/L2 T/L3...
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Fuse ASIC Driver Driver A2(0V) A2(0V) U V W Mitsubishi Electric safety controller MELSEC-WS series CPU module WS0-CPU0 Safety I/O combined module WS0-XTIO Figure 7 Safety system example of the FR-A800-LC inverter NOTE • When starting up the system operation, press the RESET switch to reset the safety stop function first.
TEST AND CHECKING FAILURE Caution To avoid system faults, 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.Also, check the safety stop function at system installation, any software changes, and parameter setting changes.
NOTE • The response time from safety stop signal input to drive shutoff (safe state) is faster than 8ms. • Hold the ON or OFF status for 2 ms or longer to input signal to terminal S1 or S2. Signal input shorter than 2 ms is not recognized. Diagnostic If a failure is detected, the FR-A800-LC inverter outputs a fault signal and ‘E.SAF’...