Siemens RVD230 - Relay Test; Display of Pump Speed; Display of Digital Inputs

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Siemens Building Technologies Basic Documentation RVD230 CE1P2383en
HVAC Products 26 Function block Test and display 27.05.2004
Using the line selection buttons and , it is possible to switch from the sensor test
to the setpoint test, and vice versa; in that case, the selected code is maintained.
26.4 Relay test
The relay test is used to manually energize each relay contained in the RVD230 in order
to check its status. The relays are energized by pressing the setting buttons
and .
Each relay is assigned a code:
Code Response or current state
0 Normal operation (no test)
1 All relays de-energized
2 Relay at terminal Y1 energized
3 Relay at terminal Y2 energized
4 Relay at terminal Q1 energized
5 Relay at terminal Q3 energized
6 Relay at terminal Y5 energized
7 Relay at terminal Y6 energized
8 Relay at terminal Q2 energized
9 Relay at terminal Y7 / Q4 energized
10 Relay at terminal Y8 / K6 energized
Before making the relay test, always close the main valve!
The relay test is terminated as follows:
• Select another operating line, or
• Press any of the operating mode buttons, or
• Switch to manual operation, or
• Automatically after 8 minutes
26.5 Display of pump speed
The display is made on operating line 164; the speed of the pump selected on operat-
ing line 57 is given as a percentage of the nominal speed.
26.6 Display of digital inputs
On operating line 165, information about the digital input variables is available. Interro-
gation is made with the setting buttons
and . For identification, the display format
is used.
At input H5, it is possible to receive pulses. Such pulses can be, for instance:
• Heat demand signal
• Signals from an alarm contact
• Pulses from the flow switch
The current state of the contact can be interrogated:
0 = contact open
1 = contact closed
The display shows H5 and 0 or 1
If pulses are received at H5 (e.g. pulses for limiting the volumetric flow of heat meters,
etc.), the number of pulses received per minute will be displayed.
Only entire pulses can be displayed. The display shows pulses/min; the measurement
range is 0…2250 pulses/min.
The display shows H5 and the measured value.
Note
Contact H5
Pulses