PSI 6300.315L2

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The PSI 6300.315L2 is a frequency inverter with IP20 protection and an operating voltage of +24V= with +20%, -15% ripple. Designed by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series, it operates efficiently between 0 to +55°C. It features a V24/RS232 programming interface and a lithium backup battery.

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Product Description:

The PSI 6300.315L2 Frequency Inverter is a robust product designed by Bosch Rexroth Indramat to support industrial welding processes. It combines a medium frequency inverter and weld timer in a single housing. This model ensures precise control and flexibility in demanding applications.

The PSI 6300.315L2 frequency inverter features a weight of approximately 21 kg and utilizes frame terminals supporting cables up to 50 mm². Required tightening torque for connections of the model ranges between 6 to 8 Nm. The construction of this model integrates a 3 phase medium frequency inverter and weld timer housed together. The program memory of the inverter is battery buffered RAM that ensures data retention in case of power loss. Electrode force control is achieved via programmable analog signals or digital inputs. Analog inputs can be configured as 0 to + 10 V (max. 20 mA), 0 to 20 mA or 4 to 20 mA (up to 500 ohms). Feedback of the model for pressure or electrode force can be set as one digital input (24 V DC, 3 mA) compliant with EN 61131-2 Type 3 or two analog inputs (0 to 10 V). Input type can be selected depending on the configuration.

The PSI 6300.315L2 frequency inverter supports up to 256 user configurable welding programs for flexibility in welding applications. It can manage a total of 32 electrodes with electrode number 0 designated for special functions such as calibration, maintenance or system diagnostics. The device ensures precise control and management of electrode parameters. It is designed for modular adaptation based on operational needs and component compatibility. The PSI series frequency inverters allows flexible control over welding force using analog or digital input options which is crucial for process customization.

Analog Pressure Output (Current)
0–20 mA or 4–20 mA (max 500 Ω)
Analog Pressure Output (Voltage)
0–10 V
Backup Battery
Lithium AA 3.6V, 2-year life
Climatic Category
3K3 per EN60721-3-3
Digital Input Levels
Logic 1: 16–30 V @20 mA; Logic 0: -1–4 V
Electrodes Supported
Up to 5 (Nos. 0–4)
Fieldbus Options
PROFIBUS-FMS, INTERBUS-PMS, Ethernet 10 Mbit/s
Max Altitude
2000 m a.s.l.
Operating Temperature
0 to 55 °C
Operating Voltage
24 VDC +20%/−15%
Programs Supported
Up to 256 programs
Protection Rating
IP20
Rated Current @24 V
Approx. 1.5 A (no I/O modules)
Serial Interface
RS232 (isolated V24), 9-pin D-sub
Starting Current @24 V
Approx. 2 A for 10 ms
Storage Temperature
-25 to 70 °C

Frequently Asked Questions about PSI 6300.315L2:

Q: Can the PSI 6300.315L2 manage multiple electrode configurations efficiently?

A: Yes, the PSI 6300.315L2 can handle up to 32 electrodes in total. Electrode 0 is reserved for calibration, maintenance, and system diagnostics.

Q: How does the PSI 6300.315L2 maintain memory during power failure?

A: It uses battery-buffered RAM to retain program memory, ensuring no data loss during unexpected power interruptions.

Q: Can I customize welding processes using PSI 6300.315L2 input settings?

A: Yes, analog inputs are configurable as 0–10 V, 0–20 mA, or 4–20 mA. Digital and analog options allow flexible setup based on application needs.

Q: What type of control does the PSI 6300.315L2 provide over electrode force?

A: It supports programmable analog signals or digital inputs for force control, with feedback options depending on system configuration.

Q: Does the PSI 6300.315L2 allow secure cable connections in high-load setups?

A: Yes, it supports frame terminals for cables up to 50 mm², requiring a tightening torque of 6 to 8 Nm for secure installation.


Internal Product Review

  • ‘‘The PSI 6300.315L2 frequency inverter by Bosch Rexroth Indramat integrates a battery-buffered RAM for data retention, 256 customizable welding programs, and EN 61131-2 compliant inputs. Weighing 21 kg, it supports modular adaptation and digital signal flexibility. This inverter ensures high-precision control in demanding welding environments.’’

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