Operation With 4-20Ma Transmitter; Remote Control Auto/On-Off; Timing Control Board Option - Bernard Controls INTEGRAL+ Manuel De Mise En Service

10.9 OPERATION WITH A 4-20MA TRANSMITTER
In standard the actuator potentiometer is used to know the valve position.
Switch 7
Move switch 7 to position B for operation with a transmitter 4-20mA instead of the actuator
potentiometer. The CI2701 board can provide the power supply to the transmitter TAM or FSG.
10.10 REMOTE CONTROL AUTO / ON-OFF CONTRO
With a positioner, one can do remote control by a signal 4-20mA or by open/close/stop commands.
The input AUTO / ON-OFF CONTROL on the customer terminal board allows to switch from one type
of control to the other one.
See chapter 5: remote control for the configuration of the open and close commands.
Note: the remote controls «AUTO / ON-OFF CONTROL» and «LOCAL CONTROL INHIBITION» use
the same input on the customer terminal board. The implementation of the positioner automatically
allocates this input to the function AUTO / ON-OFF CONTROL. The function «LOCAL CONTROL INHIBI-
TION» cannot be used with a positioner.
11 POSITIONER OPTION
In option a local indication through a window at the local controls level shows the actuator status.
- Valve open lamp
- Valve closed lamp
- Actuator power-on lamp

12 TIMING CONTROL BOARD OPTION

An additional timer control module permits to slow down the speed of the actuator, for example
to protect the pipe against hammer blows if stroke time is too fast.
This module is connected to entry P202TEMPO of the actuators Integral+ control board. When electric
commands are given, the timing action is assured by a STOP and ON function of the motor starter.
The time of operation ON and the time of STOP are adjustable:
T. ON :
T. STOP :
Thus the total time of operation for the valve stroke can be very slow with the advantage of adjust-
ment availability at site.
The adjustments for open and closed direction are independent.
By using an auxiliary limit switch it is possible to bypass the timing control as long as the limit switch
is activated. This device permits the actuator to operate at rated speed a part of the valve stroke. The
length of the limit switch operating cam represents approximately 10% of the total valve stroke.
18
0,5 sec. to 10 secs.
3 secs. to 2 min.
L