HSS03: Hydraulic Servo [FC55]


Specifications

Spec Description
S1Slave address
S2Output device (see below)
S3LVDT select (see below)
S4LVDT error output action (see below)
S5LVDT frequency select (khz)
  • 0.0 = DC LVDT mode
S6Position demand (percent)
S7Calibration stroke time (seconds)
S8Calibration cycle count (1.0 - 8.0)
S9Calibration type:
  • 0 = full calibration (0% and 100%)
  • 1 = 0% calibration
  • 2 = 100% calibration
S10Calibrate mode enable
  • 0-1 transition = calibrate
S11Calibrate hold/go
S12Auto/hard manual mode
S13Spare boolean
S14Block output display units (see below)
S15Demodulator gain constant
S16Controller gain proportional constant
S17LVDT 1 differential voltage (0% actuator)
S18LVDT 1 differential voltage (100% actuator)
S19LVDT 2 differential voltage (0% actuator)
S20LVDT 2 differential voltage (100% actuator)
S21Contingency deadband (percent)
S22Spare real

Format for S2-S4

S2 Output Device

0 Output 1 = active servo

Output 2 = unused

1 Output 1 = unused

Output 2 = active servo

2 Output 1 = active servo

Output 2 = redundant servo

3 Output 1 = active servo

Output 2 = redundant servo (20% standby)

4 Output 1 = active 4-20mA I/H converter
5 Output 1 = active 20-160mA I/H converter

S3 LVDT Select

0 Input 1 = LVDT

Input 2 = unused

1 Input 1 = unused

Input 2 = LVDT

2 Input 1 = LVDT 1

Input 2 = LVDT 2

3 Input 1 = LVDT 2

Input 2 = LVDT 1

4 Input 1 = LVDT I/H display

Input 2 = 4-20mA contingency error

S4 LVDT Error

0 Valve closes to 0%:
  • servo mode = 0V
  • 4-20mA mode = 4mA
  • 20-160mA mode = 20mA
1 Valve opens to 100%:
  • servo mode = max. V
  • 4-20mA mode = 20mA
  • 20-160mA mode = 160mA
2 Valve unchanged (I/H mode)
3 Valve moves to null (I/H mode)

Outputs

Block Type Description
N Real Actuator position (percent or volts)
N+1 Real IMHSS03 D/A converter (%/span)
N+2 Real Servo 1 coil 1 current
N+3 Real Servo 1 coil 2 current
N+4 Real Servo 2 coil 1 current
N+5 Real Servo 2 coil 2 current
N+6 Real Slave status
N+7 Real LVDT status
N+8 Bit Good/bad hardware status
N+9 Bit Good/bad communication and watchdog timer status