Siemens MD-BMS - Page 117

Appendices
Appendix L
-
Core Measurement Parameters
-
Energy
117
Building Technologies 125-202
06/06/2017
Measurement Parameters: Power Factor BACnet
Object
Identifier
Modbus
Register
Modbus
Offset
(Offset to a
Base of 40001)
kVARh – Reactive Energy defined as Kilo Volt-Amperes, Reactive
is a measure of the rate of energy that is sloshing back and forth, twice a cycle, between an AC source and a reactive (capacitive or inductive)
load. The phase difference between the voltage wave and the current wave components used for the measure is ± 90 degrees.
System Total Reactive Energy (kVARh System)
= unsigned value of ABS(kVARh L1)+ABS(kVARh L2)+ABS(kVARh L3)
= kVARh Sys, signed, absolute, in kW, BACnet
= total kVARh Sys value, unsigned, total reactive energy, in kVARh
= positive kVARh Sys, unsigned, positive instantaneous energy, in kVARh
= negative kVARh Sys, unsigned, negative instantaneous energy, in kVARh
NOTES:
If kVARh value>0, kVARh positive = kVARh sys, kVARh negative = 0
If kVARh value<0, kVARh negative = kVARh sys, kVARh positive = 0
6010
‒
‒
6020
‒
6030
‒
‒
44008 lsw
44009 msw
46008 lsw
46009 msw
47009 lsw
47009 msw
‒
4007 lsw
4008 msw
6007 lsw
6008 msw
7007 lsw
7008 msw
Individual Phase Reactive Energy- L1 (kVARh L1)
= total kVARh L1 value, unsigned, individual L2 kVARh energy, in kVARh
= positive kVARh L1 value, unsigned, individual L2 kVARh energy, in kVARh
= negative kVARh L1 value, unsigned, individual L2 kVARh energy, in kVARh
NOTES:
If kVARh L1 value>0, pos kVARh L1 = total kVARh L1, neg kVARh L1 = 0
If kVARh L1 value<0, neg kVARh L1 = total kVARh L1, pos kVARh L1 = 0
‒
‒
‒
6050
‒
6060
‒
44032 lsw
44033 msw
46032 lsw
46033 msw
47032 lsw
47022 msw
4031 lsw
4032 msw
6031 lsw
6032 msw
7031 lsw
7032 msw
Individual Phase Reactive Energy- L2 (kVARh L2)
= total kVARh L2 value, unsigned, individual L2 kVARh energy, in kVARh
= positive kVARh L2 value, unsigned, individual L2 kVARh energy, in kVARh
= negative kVARh L2 value, unsigned, individual L2 kVARh energy, in kVARh
NOTES:
If kVARh L2 value>0, pos kVARh L2 = total kVARh L2, neg kVARh L2 = 0
Iff kVARh L2 value<0, neg kVARh L2 = total kVARh L2, pos kVARh L2 = 0
‒
‒
6080
‒
6090
44034 lsw
44035 msw
46034 lsw
46035 msw
47034 lsw
47035 msw
4033 lsw
4034 msw
6033 lsw
6034 msw
7033 lsw
7034 msw
Individual Phase Reactive Energy- L3 (kVARh L3)
= total kVARh L3 value, unsigned, individual L2 kVARh energy, in kVARh
= positive kVARh L3 value, unsigned, individual L2 kVARh energy, in kVARh
= negative kVARh L3 value, unsigned, individual L2 kVARh energy, in kVARh
NOTES:
If kVARh L3 value>0, pos kVARh L3 = total kVARh L3, neg kVARh L3 = 0
If kVARh L3 value<0, neg kVARh L3 = total kVARh L3, pos kVARh L3 = 0
‒
‒
6110
‒
6120
44036 lsw
44037 msw
46036 lsw
46037 msw
47036 lsw
47037 msw
4035 lsw
4036 msw
6035 lsw
6036 msw
7035 lsw
7036 msw