U
F-B
: +2.5 to +13.5 V. At +8 V spool in centered position
R
a
: approx. 15 k
Ω
I
nput command referenced to
⊥
I
D-E
: 0 to
±
10 mA
(load resistance 200
Ω
)
Input command (invert.)
I
E-D
: 0 to
±
10 mA
U
D-B
and U
E-B
:
max.: –15 V
max.: +24 V
Function Voltage command
Current command
Supply
24 VDC (min. 19 VDC, max. 32 VDC) I
max
: 300 mA
Supply / signal ground
(0V)
Enabled
1
)
U
C-B
> +8.5 VDC
Not enabled
U
C-B
< +6.5 VDC
Protective grounding
Valves with 6+PE pole connector to DIN 43 563 and mating connector (metal shell) with leading protective ground connection ( )
Output actual value
U
D-E
: 0 to
±
10 V
R
e
: 10 k
Ω
Input rated command
(differential)
I
e
= 1.2 mA at 24 VDC
Valve
Connector
Mating
connector
Cabinet side
Valve electronics with supply voltage 24 Volt and 6+PE - pole
connector
a.
Command input
Command signal 0 to
±
10 V
The spool stroke of the valve is proportional to (U
D
– U
E
). 100% valve opening
P
➔
A and B
➔
T is achieved at (U
D
–U
E
) = +10 V.
At 0 V command the spool is in the center position.
The input stage is a differential amplifier.
If only one command signal is
available, pin D or E is connected to signal ground (pin B) according to
the required operating direction (to be done at the mating connector).
Command signal 0 to
±
10 mA
The spool stroke of the valve is proportional to (I
D
– I
E
). 100% valve opening
P
➔
A and B
➔
T is achieved at (I
D
– I
E
) = +10 mA.
At 0 mA command the
spool is in the center position.
Either pin D or E is used according to the required operating direction.
The unused pin is left open (not connected at the mating connector).
The input pins D and E are inverting.
Circuit diagram for measurement of actual value U
F
(position of
main spool) for valves with 6+PE pole connector
General Requirements
➢
Supply 24 VDC, min.19 VDC, max. 32 VDC. Current consumption
max. 300 mA
➢
All signal lines, also those of external transducers, shielded
➢
Shielding connected radially to (0V), power supply side, and connected
to the mating connector housing (EMC)
➢
EMC
: Meets the requirements of EN 55011/03.91 class B,
EN 50081-1/01.92, and EN 50082-2/03.95, perf. crit. class A
➢
Protective grounding lead > 0.75mm
2
(AWG 16)
➢
Note: When making electric connections to the valve (shield, protective
grounding), appropriate measures must be taken to ensure that locally
different earth potentials do not result in excessive ground currents.
See also MOOG Application Note AM 353 E.
b.
Monitoring output
Actual value +2,5 to +13,5 V
Valves with voltage and current command input
The actual spool position value can be measured at pin F (see diagram
below). This signal can be used for monitoring and fault detection
purposes.
The spool stroke range corresponds to +2,5 to +13,5 V. The center
position is at +8 V. +13,5 V corresponds to 100% valve opening P
➔
A
and B
➔
T.
1
) With enable signal < +6.5 V the spool moves into the position adjusted for 0 V command signal.
Connector Wiring
- Type code letter
S
(see sticker on the electronics housing)
10
