Pulse Valency - Siemens Synco 700 Basic Documentation

Types of meters
Setting
Note on "Meter 1"
Notes
Example 1
Example 2

Pulse valency

184/238
Building Technologies
HVAC Products
The meters are used to optimize plant operation. They also serve for limiting the
pulses.
The following types of meters can be used:
• Mechanical pulse sources (Reed contact) with no Namur circuitry, having a maxi-
mum pulse frequency of 25 Hz and a minimum pulse duration of 20 ms
• Electronic pulse sources having a maximum pulse frequency of 100 Hz and a mini-
mum pulse duration of 5 ms
Electronic pulse sources, such as Open Collector outputs, generate shorter, less
bouncing pulses than mechanical pulse sources, such as relays or Reed contacts.
To ensure full flexibility with regard to models, the type of meter can be selected:
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Inputs > RMH760.X... (or RMZ78.... )
Operating line
Type
A name can be entered for every meter (refer to section 11.8 "Assignment of text"). If,
after assigning a name, the meter is called up, it is no longer "Meter 1" (or 2, 3, or 4)
that appears, but the name entered
• The pulse meters integrated in the RMB760B are not suited for billing purposes, the
reason being insufficient accuracy. To ensure valid billing data, readout must take
place directly on the meters (heat meters, electricity meters, etc.)
• Meters using Namur or S0 circuitry are not supported
• 4 independent meters are available
11.4 Pulse valency
Every pulse delivered by a pulse source corresponds to a certain consumption value.
The pulse valency is imprinted on the meter. It must be entered as a numerator and
denominator.
Settings: Pulse valency numerator = 20
Pulse valency denominator = 1
Pulse unit = liter
Pulse valency = 20 liters / pulse
Settings: Pulse valency numerator = 10
Pulse valency denominator = 3
Pulse unit = Wh
Pulse valency = 3.33 Wh/pulse
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Data acquisition > Meter 1 (or 2, 3 or 4 )
Operating line
Pulse unit
Pulse valency numerator
Pulse valency denominator
Modular Heating Controller RMH760B
11 Function block meter
Range
Mechanically /
Electronically
Range
Wh / kWh / MWh /
kJ / MJ / GJ /
ml / l / m3 /
Heat cost unit /
No unit / BTU
1...9999
1...9999
Factory setting
Mechanically
Factory setting
kWh
1
1
CE1P3133en
05.02.2007