Robur Roburbox100, Installation And Use Manual

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RB100 : Installation and Use Manual
12 Ed. 06/2014 – FW version 1.002
Operation of valve service
As already said before, this service is used to control three-way motorized valves, which
allow acting directly on hydraulic plant, mainly meeting one of the following two needs:
¾ manage hydraulic separation of separable unit from basic group;
¾
switch plant operation from heating to cooling and vice versa.
2 digital inputs support the valve, to connect valve auxiliary contacts (clean contacts to
signal valve position). Position information is used by DDC [ref. to DDC Installation
Manual (D-LBR 273) and DDC Use and Programming Manual (D-LBR 249)] to manage
valves and the whole plant more accurately.
Water flow to be ensured by valves during their activation is specified in Table 3 on page
10.
Operation of outputs (general alarm, non-available request service)
RB100 interface has a general alarm output common for all services. It activates when
error conditions occur on at least a service or when a DDC receiving a request service
signals a machine or DDC warning/error.
For each service on RB100 interface, a digital output is available to signal service non-
availability. This service is only generated if service is enabled.
Service non-availability warning is always accompanied by an error code flashing on
display, to identify abnormality (APPENDIX on page 72).