PSN1 / PSN3
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-4857 Rev.10 P. 4 / 9
INSTALLATION
Valve, yoke and other components necessary to connect the
PSN to the valve are provided by the customer.
DO NOT CHANGE the ex-factory settings of the PSN. The
following procedure should be done with the power supply
removed, except when otherwise specified.
(General Procedure)
1) Apply power input and 0% input signal (100% for direct
action) in order to expose the output stem to the maxi-
mum degree.
2) Set the valve stem at the lowest position.
3) Connect the PSN to the yoke.
4) Screw the valve stem into the output stem until there is
little opening between them.
For applying a sealing pressure, refer to flexure values in
Table 3 (e.g. 1 mm for applying 1500 N for PSN1-x1) and
screw it until the opening equals the value.
5) Fix both stems with a lock nut.
6) Apply power input and approx. 50% input signal and
check that there is no opening between the yoke and
valve bonnet.
Fix the yoke and the valve.
7) Connect the indicator and other components if necessary.
ø9 (.35)
R1
ø14 (.55)
6 (.24)
4 (.16)
40°
Figure 3. Stem Details
1 (.04)
16 (.63)
ø15 (.59)
ø15 (.59)
ø10
(.39)
140°
40°
6 (.24)
Figure 4. Indicator Details
SERVO-TOP II
Bolt
Scale Plate
Output Stem
Indicator
Valve Stem
Button
Lock Nut
Yoke
Valve Bonnet
Figure 5. Connecting the PSN with a Valve, Example
ELECTRICAL CONNECTIONS
Remove the cover of the PSN body and wire to the terminal
block according to Figure 6.
The PSN requires the power input (1 – 2) and input signal
(3 – 4) connections for operating.
2
1
5
3
7
4
8
6
11
12
9
10
*
Input resistor attached for a current input.
PU-2x
MODULAR JACK
U(+)
V(–)
POWER
COM1
INPUT SIGNAL
POSITION SIGNAL
+
+
R
*
COM1
EXT.
RETR.
FORCED
OPEN/CLOSE
COMMAND
COM2
FULL OPEN
/CLOSE
(RETR.)
(EXT.)
ALARM
SEQUENTIAL
CONTROL
APPLICABLE SOLDERLESS TERMINAL
5.9 (.23)
max.
4.6 (.18) min.
3.2 (.13) dia min.
Figure 6. Connection Diagram
