Operating Instructions

Chapter 3 – Point Database
20
Siemens Industry, Inc.
Owner's Manual, Apps 2920/2926
125-5109
2015-06-30
Descriptor
Address
1
Application
Description
SENSOR SEL
104
All
Room unit configuration point and thermistor type selection,
values are additive.
VENTURI ACT
105
2920, 2926
Setup point. Indicates NOPEN or NCLOSE for Venturi Air
Valves.
MODHTG FLO
106
2920, 2926
The minimum flow in feet per minute needed for safety
purposes when using electric reheat.
DO DIR.REV
107
All
Reverses the output state for selected non-motor digital
outputs.
RM RH
{108}
All
Room humidity when room unit is provided with humidity
sensing.
FAIL TIME
109
2920, 2926
Indicates when the air volume is too far away from setpoint for
too long.
MINHOODVOLTS
117
2920, 2926
Minimum voltage value for fume hood input range (typically
0.0V or 1.0V.
RM CO2
{118}
All
A point can be unbundled in the controller for monitoring
purposes. This point may be used in a control strategy as
occupancy increases (CO2 levels increase) in the room being
controlled.
TABLE VOLTS
{119}
2920, 2926
Editable table statement point allowing low flow functionality;
actuator voltage corresponds to TABLE FLOW value.
V TABLE PT
{120}
2920, 2926
Venturi table statement, only point that can be edited.
HI LIMIT
121
2920, 2926
Used in the determination of when the flow PID will “coast” if
near setpoint.
LO LIMIT
122
2920, 2926
Used in the determination of when the flow PID will “coast” if
near setpoint.
S OPEN LOOP
123
2920, 2926
YES commands the controller to operate in the supply in Open
Loop mode. No PID control will be used in this mode.
G OPEN LOOP
124
2920, 2926
YES commands the controller to operate in the exhaust in Open
Loop mode. No PID control will be used in this mode.
SUP MAX RATE
125
2920, 2926
The point is used to effectively limit the speed of the Supply
actuator. The default value of zero turns off this functionality.
GEX MAX RATE
126
2920, 2926
The point is used to effectively limit the speed of the General
Exhaust actuator. The default value of zero turns off this
functionality.
1)
Points not listed are not used in this application.
2)
Point numbers that appear in brackets { } may be unbundled at the field panel.