VM50/B-TC1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VM50/B-TC1 is part of the VM Amplifier Drives series and operates with a control supply of 24 V DC. It is equipped with a 440 V, 25 A Class A mains filter and uses a 3 x 400 V mains line. The drive features a BTB relay contact for monitoring output and a Faston plug shield terminal.
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Product Description:
The VM50/B-TC1 is an amplifier drive module manufactured by Bosch Rexroth Indramat for the VM Amplifier Drives series. Installed inside a multi-axis automation cabinet, it forms the link between the three-phase mains and individual servo inverters, providing energy buffering, line filtering, and protective monitoring. By conditioning incoming power and supervising thermal conditions, the module supports stable operation of synchronous or induction motors commanded by Rexroth controllers, making it a key component in packaging machines, material-handling gantries, and other automated equipment.
Incoming power connects to a three-phase supply rated at 3 × 400 V, matching common European industrial mains. A built-in mains filter rated at 440 V / 25 A, Class A attenuates conducted noise so the drive meets emission limits without extra components. The control electronics remain active through a separate 24 V DC supply, allowing diagnostics even when the main bus is de-energized. The internal DC link is disconnected if its voltage falls below the protection threshold of 400 V, protecting downstream inverters from unstable operating conditions. To keep the power semiconductors within their safe operating range, onboard sensors trigger a shutdown if the heat sink temperature rises above 100 °C.
The status of the thermal circuit and DC link is signaled through a BTB relay contact that provides a hardwired fault channel to the supervisory PLC. The module has no optical indicators on its front panel, which simplifies the enclosure design while leaving status reporting to the relay interface. Electromagnetic damping on the incoming conductors is reinforced by a ring-core ferrite measuring Ø28 × 20 mm. For full shielding continuity, motor and power cables terminate on a chassis-mounted Faston plug that provides a low-impedance path for high-frequency electrical noise. This connection helps preserve effective cable shielding where conductors enter or leave the module enclosure.
Frequently Asked Questions about VM50/B-TC1:
Q: What is the control supply voltage for the VM50/B-TC1 amplifier drive?
A: The VM50/B-TC1 requires a 24 V DC control supply for operation.
Q: What is the mains line voltage required by the VM50/B-TC1?
A: This model operates with a mains line of 3 x 400 V, suitable for industrial environments.
Q: What type of monitoring output does the VM50/B-TC1 provide?
A: The VM50/B-TC1 is equipped with a BTB relay contact for monitoring output.
Q: What are the specifications of the mains filter in the VM50/B-TC1?
A: This amplifier drive supports a mains filter rated at 440 V / 25 A Class A.
Q: What type of shield terminal does the VM50/B-TC1 utilize?
A: The shield terminal connection on this unit uses a Faston Plug.
