8
local control mechanism is knobs on the side of electric wiring box. Please refer to
7.2.4 for operating methods.
7. Electrical setting for the integral type of electric actuator
XZA series include basic integral type and explosion-proof integral type.
7.1 Features:
7.1.1 Identify the phase sequence automatically; open-phase protection
7.1.2 DC24V is applied in remote control
7.1.3 A convenient, flexible wiring methods for users
7.1.4 The switch of the local control buttons applies Hall element, and it is applied
with a blind design which is of a high tightness.
7.1.5 Five dry contacts indicate working condition of the actuator, which provides
convenience for DCS System’s control on the actuator.
7.1.6 Set up the actuator’s supervisory relay in order to provide a comprehensive
failure signal for DCS System.
7.1.7 Automatically setting for the valve’s output current from zero to full(this is
applied for those which with output current and those adjusting type)
7.1.8 Switch knob could be locked by ordinary padlock, if needed, in case of human’s
mal-operation.
7.2 Debugging
7.2.1 Please make a reference to the electric schematic diagram in the attachment.
7.2.2 “Power/Malfunction” indicator on the local control buttons shows green light
after power is on.
7.2.3 Please make a reference to “6 Debugging” to adjust the stroke control
mechanism and position indication mechanism.
7.2.4 Local control and adjustment (Please refer to the attached electric schematic
diagram)
Turn the change over button to the
“local”(shown in Fig.6, the bigger button on
the bottom of the indicator box is change over
button; on the top is the switch button).
“Local/Remote” button’s indicator is red,
which means the electric actuator is locally
operated.
Turn the switch knob counterclockwise, the
actuator will run to the opening direction, and
the “valve on/valve off” indicator flashes red
light. When the electric actuator is turned on
until it stops at the fully open position, the
“valve on/valve off” indicator light is red, the
“dry contact common end” and “open to
position” have a closed dry contact output
Fig.6
