15
YT-3400/3450 series
4.4.2
Double acting actuator
Double acting type positioner is set to use OUT1 and OUT2 port. As input signal increases,
the supply pressure will be supplied through OUT1 port.
Fig. 8: Double acting linear (left) and rotary (right) type actuator
4.5
Connection – Power
4.5.1
Safety
When installing in hazardous and explosive gas area, conduit tube or pressure-proof
packing union must be used. The compound charging box should be the flameproof
type and must be sealed completely.
Conduit entry connection tap is PF 1/2 or G 1/2.
Before connecting terminal, ensure that the power is off completely.
Do not open the
cover when the power is still alive.
Please use ring-type rug to protect against vibration or any other external impact.
Positioner with PTM options must be supplied 10~28V DC separately. For L/S option,
separate 12-24V DC must be supplied.
For both options, it should not exceed 30V
DC.
Positioner should be grounded.
Please use twisted cable with conductor section are 1.25mm
2
and that is suitable for
600V (complying to the conductor table of NEC Article 310.) The outer diameter of the
cable should be between 6.35 ~ 10mm. Use shield wire to protect against electro-
magnetic field and noise.
Please do not install the cable near high noise equipments, such as high-capacity
transformer or motor.
