Diamond Products CB66DS - Manual (Page 32)

H30 Operation Manual Houston Street Technologies
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8. Engine Stall Protection (ESP)
When ENGINE STALL PROTECTION (ESP) is enabled, the H30 can be used to engage and disengage feed
rollers that may be overloading the engine, causing it to stall. One of the H30’s digital outputs can be configured
to engage the feed forward solenoid at a set RPM limit, while a second digital output can be used to reverse the
feed direction for a set amount of time (0.0 to 1.0 seconds) when a low RPM limit is reached. Reversing the
feed direction is optional, the H30 can be configured to simply stop feeding until the engine RPM’s increase to a
minimum threshold speed and then re-engage the feed forward solenoid.
ESP can be used with single- or dual-valve feed systems. See the following sections for details on each system
are below.
ESP - SINGLE VALVE
A single-valve feed system is comprised of a single 3-position valve that uses two solenoids to control hydraulic
oil flow, and ultimately the feed direction.
ENGAGE SPEED Minimum engine RPM at which the feed rollers will begin
feeding forward
DISENGAGE SPEED Engine RPM that the feed rollers will stop (and reverse if
enabled)
FEED FORWARD The digital output used to control the feed forward solenoid
FEED REVERSE The digital output used to control the feed reverse solenoid
REVERSE TIME Length of time the feed rollers will be reversed
VALVE DELAY Solenoid time delay between switching from forward to
reverse and vice versa (used to minimize stress on the
hydraulic system)
MANUAL FORWARD Digital input used to manually forward the feed rollers when
the engine is running
MANUAL REVERSE Digital input used to manually reverse the feed rollers when
the engine is running
SCREENSHOT - ESP SINGLE VALVE
ESP SETUP - SINGLE VALUE
ENGAGE SPEED: 2200 RPM
DISENGAGE SPEED: 1800 RPM
FEED FORWARD: D/O#
FEED REVERSE: D/O#
REVERSE TIME: 0.3 SECONDS
VALVE DELAY: .05 - 1.0 SECONDS
MANUAL FORWARD: D/I#
MANUAL REVERSE: D/I#
RETURN TO OPERATING MODE