MTS Model FlexTest SE - Manual (Page 111)

Valve Connections
Models FlexTest® IIm/GT/SE Controller Hardware FlexTest GT Controller Connections 111
Series 257 Valve
connections
The Series 257 Servovalve is a 3-stage servovalve that requires a power driver.
The Model 493.15 Valve Driver supports the inner loop signals. The following
figure shows the connections between the valve driver and the valve. To connect
the valve to the I/O Carrier module, see
“Cable Part Numbers” on page 85.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
J4 - J7 To/From
Servovalve
To/From
I/O Carrier
+ Excitation
- Excitation
+ Feedback
- Feedback
Signal Ground
+ Valve Command
- Valve Command
448.16
Power
Driver
Inner Loop
Outer Loop
Command
LVT
(stability)
Loop
Valve
Driver
Test
Command
Controller
Control
Mode
Valve LVDT
Feedback
Actuator LVDT
Feedback