INSTALLATION
JUMPER SETTINGS
3 - 8
I-E96-322A
®
3. Refer to the LVDT specifications for the recommended
LVDT oscillator amplitude.
4. Refer to Table
for dipswitch settings and set poles 5
through 8 accordingly.
JUMPER SETTINGS
There are 31 jumpers on the HSS module. These jumpers
select options such as servo valve or I/H converter mode, four
to 20 milliamp positioning for contingency errors in I/H con-
verter mode, servo valve output current, and AC or DC LVDT
transformers. Table
lists the HSS module jumper settings.
Figure
shows details of the jumpers. Figure
shows the
location of J31 on the HSS circuit board. Set the jumpers to
meet the requirements of your particular system.
Table 3-5. Dipswitch S5, Dither Oscillator Frequency/Amplitude
and LVDT Oscillator Amplitude
Setting
Dipswitch Pole
User Setting
1
2
3
4
5
6
7
8
Dither oscillator frequency = 300 Hz
0
1
Dither oscillator frequency = 200 Hz
1
0
Dither amplitude = 5% of current output
0
1
Dither amplitude = 10% of current output
1
0
Dither disabled
1
1
LVDT oscillator amplitude = 2.1 Vpp
0
0
0
0
LVDT oscillator amplitude = 2.6 Vpp
0
0
1
0
LVDT oscillator amplitude = 3.6 Vpp
0
1
1
0
LVDT oscillator amplitude = 4.5 Vpp
0
1
1
1
LVDT oscillator amplitude = 5.4 Vpp
1
0
0
1
LVDT oscillator amplitude = 6.0 Vpp
1
0
1
0
LVDT oscillator amplitude = 7.7 Vpp
1
1
0
0
LVDT oscillator amplitude = 9.0 Vpp
1
0
1
1
LVDT oscillator amplitude = 13.5 Vpp
1
1
0
1
LVDT oscillator amplitude = 18.0 Vpp
1
1
1
0
NOTE: 0 = CLOSED or ON, 1 = OPEN or OFF.
Table 3-6. Jumpers J1 through J31
Function
Jumper
Position
Jumper
Normal LVDT configuration
1-2
J1-J5
4 - 40 mA input (I/H converter con-
tingency error, LVDT 2_1)
2-3
Servo valve mode
1-2
J6, J7, J26
I/H converter mode
2-3