
AB-6738
18
Manual Operation Mode
In the manual operation mode, even when this product has not been connected via SAnet yet, the operations shown in Table 2
can be performed. Follow the procedure below for the operation check. For the locations of the service pin switch and the rotary
switch, see Fig. 11.
1) Keep the service pin switch pressed for 10 seconds to enter the manual operation mode.
2) Turn the rotary switch to the desired position (See Table 2.), using a precision slotted screwdriver.
Operation will start in 3 seconds after setting the rotary switch.
Table 2. Operations in the manual operation mode
Rotary switch scale Operation
0 Restart (to go back to the normal operation mode)
2 Fully close (in 0 % position)
4 Open in 50 % position
6 Fully open (in 100 % position)
8 Spring return operation check
A Cancel of spring return operation check
E Automatic adjustment of the potentiometer.
Notes:
∗Rotary switch scales 1, 3, 5, 7, 8, 9, B to D and F are
not available in the manual operation mode.
∗Do not set the rotary switch to ‘E’.
(Operation of the rotary switch ‘E’ is required only
when potentiometer itself is replaced.)
3) After the operation, press and hold the service pin switch for 10 seconds to go back to the normal operation mode.
4) If the address is set with the rotary switch, be sure to reset the rotary switch at the address after entering the normal
operation mode.
Interlock Operation
This product (Model VY516XK/VY516XH) has the forced shutoff DI (contact input) for interlock operation. Connect the input
signal line for start/stop of air-conditioning unit in a critical steam-humidifying system.
Operation with the forced shutoff DI is as follows:
When the contact opens, the actuator forcibly closes the valve in 0 % position.
When the contact closes, the actuator continues normal operation.
Jumper is connected to the terminals 4 and 5. Remove the jumper to connect the forced fully-close signal input line. Note that
the forced fully-close input is for interlock operation and cannot be used for any other purpose.
Interlock operation due to disconnection of SAnet communication
When SAnet communication is disconnected for a certain time period, this product recognizes abnormal condition and forcibly
starts shutoff operation.
Notes:
∗Forced shutoff DI is applicable only for Model VY516XK/VY516XH ACTIVAL (spring-return type). This is not applicable for ACTIVAL Model
VY516XJ
∗To forcibly shut off the valve, interlock the operation with the forced shutoff DI. Do not interlock with disconnection of SAnet communication.
∗In the manual operation mode, the product does not forcibly start shutoff operation even when SAnet communication is disconnected for a
certain time period. But when the forced shutoff contact opens in the manual operation mode, the products forcibly starts the shutoff
operation.
Table 3. Interlock operation with the forced shutoff DI
Normal operation mode Manual peratoin mode mode
Forced fully-close input
* (4) and (5) are terminal
numbers
SAnet communicating SAnet disconnected
(for longer than a certain
period)
SAnet communicating SAnet disconnected
(for longer than a certain
period)
Contact open
Forced shutoff Forced shutoff Forced shutoff Forced shutoff
Contact closed
Normal operation Normal operation Normal operation Normal operation
(4)
(5)
(4)
(5)