MTS Model FlexTest SE - Manual (Page 135)

J28 Hydraulic Service Manifold Connector
Models FlexTest® IIm/GT/SE Controller Hardware FlexTest GT Controller Connections 135
Proportional output The proportional output is configured with the controller software.
• The output signal can be ramped from 20 mA (minimum) to 700 mA
(maximum) which corresponds with 50 psi (0.4 MPa) and 3000 psi (21
MPa). By default, low pressure is factory set at 500 psi and high pressure is
set at 3000 psi.
• The ramp rate from zero to high pressure can be set to two or four seconds.
The ramp rate from high pressure to zero can be set to zero, two or four
seconds.
• The ramp rate is constant (set to the two or four second rate), The amount of
time to reach low pressure depends on the low pressure setting.
.hwi file settings The following items can be specified in the .hwi file. For more information, see
the MTS 793 Utility Software manual.
• HSM ramp rate from zero to high pressure (HSM RATE):
SLOW = zero to high pressure in approximately 4 seconds
FAST = zero to high pressure in approximately 2 seconds
• HSM high pressure to zero mode (HSM OFF MODE):
STEP = HSM steps from high pressure to zero (default)
RAMP = HSM ramps from high pressure to zero
Important Unless there is a special need, HSM OFF MODE should not be set
to RAMP. For your safety, keep this setting at STEP.
• HSM low pressure setting as a percentage of full-scale (LOW PERCENT)
• HSM high pressure setting as a percentage of full-scale (HIGH
PERCENT)
• HSM type can be set to PROPORTIONAL, SOLENOID, or
ON_OFF_SOLENOID.
If you select ON_OFF_SOLENOID only 2 HSM control buttons (OFF/
ON) will appear on the Station Manager Station Controls panel. For the
other selections, 3 HSM control buttons will appear (OFF/LOW/HIGH).