Instruction Manual
OCM F
page 32
OCM F - rev. 05 / 06.04.2018
14.8 Controller Mode
14.8.1
General
Qualified personnel required
Knowledge in control technologies is necessarily required to correctly and safely set the
controller.
Typically there are sluice gate valves, knife gate valves or iris gate valves with electrically
driven three-step controller in use. Analog-driven slide valves cannot be used.
We recommend the following regulating times (time elapsed between valve completely open
and completely closed) for the selection of gate valves:
•
≤ DN300
(11.8 in):
min. 60 seconds
•
≤ DN500
(19.7 in):
min. 120 seconds
•
≤ DN800
(31.5 in):
min. 240 seconds
•
≤ DN1000
(39.4 in):
min. 300 seconds
For the correct driving as well as for error monitoring of the slide valve, the Way-End-
Switches “OPEN” and “CLOSE” as well as the torque switches “CLOSE” are a mandatory
requirement. These signals have to be connected to the digital inputs 1…3 of the measure-
ment transmitter. Please note to select gold-plated contacts in order to ensure contact relia-
bility. Connect a signal relay between switches and measurement transmitter digital input to
safely conduct the 10 mA input current. Analog position feedback to the measurement trans-
mitter is not planned.
The measurement transmitter OCM F operates as a three-step controller with surge detec-
tion, quick close control, slide valve monitoring and automatic flush function.
To drive the regulating unit, the relays 4 and 5 are assigned as default. Hence, relay 4 as
“slide valve closed” and relay 5 as “slide valve open” are defined. Analog input 2 is assigned
for entering external setpoints (see Fig. 14-19).
Assignment of the relays
The assignment of the relays for the controller cannot be modified.
Selection of sufficient contact material
The input current on the digital inputs of the OCM F is 10 mA. Please ensure contact relia-
bility by selecting sufficient contact materials on the end switch of the control slide valve.
Содержание OCM F
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