VT-KRRA Electric Amplifiers are double electric amplifier cards intended to operate two direct-operated high-response valves (size 6 or size 10) simultaneously, especially versions with electric position feedback.
It uses a controlled output stage, includes an enable input, and provides short-circuit-proof outputs for the valve solenoids. Connection is via two 32-pole DIN 41612 connectors for low-power/control signals plus handle-side screw plug connections for the valve wiring and 24 VDC supply, with test points for measurement access. The card supports ±10 V command inputs and supplies ±15 V for the position transducer, with defined supply and consumption limits that differ between the size-6 and size-10 variants. It also provides status indication and setup/diagnostics features such as cable-break detection for the actual-value signal, undervoltage/enable indication, and zero-point adjustment.
