TRIATEK UVM-1000 User Manual

UVM-1000
LIT-12013155
25
See the UVM Installation Manual on how to wire the pressure
sensor to the UVM. The Use Press Sens as DP check box needs
to be un-selected. The UVM is not designed to autonomously
control a VAV box. It will accept a 0 -10 V control signal from an
OEM controller and interpret this as a 0 - 100% position signal
for the actuator, and position the actuator as such (cfm (not Pos)
Input should be un-selected).
The UVM will use the ow pressure sensor to provide a 0 – 10 V
as 0 – xxx cfm feedback signal. It is up to the OEM controller to
modulate the actuator and monitor the cfm signal to obtain the
desired cfm value. Dynamic pressure, velocity, and ow values
can be observed on the Dynamic Values Tab.
Controller State Settings
This area (see Figure 5) selects the various operational states of
the UVM. Within this group are Permanent, Non-Permanent, and
Status states.
The Permanent settings are settings that can be set/un-set in the
UVM and are stored in EEPROM. They retain their state across
power losses.
The Non-Permanent states can be set from the tool, but reset
back to un-selected when the power to UVM is cycled. They are
typically used for overriding and testing.
The Status states are advisory states and are used for
debugging.
Permanents
The Use AI Setpoint state (see Figure 5) selects whether the cfm/
Positional Setpoint is derived from the Analog IN connection or
from a value set by the Conguration Tool. When selected, the
value is derived from the appropriately scaled Analog IN value.
This would be the typical mode of operation. When de-selected,
the setpoint value can be set via the Setpoint eld on the
Dynamic Values Tab. The IN voltage is ignored in this case.
The Use Press Sens as DP state (see Figure 5) selects whether
a connected pressure sensor (see UVM Installation Manual for
sensor wiring) is to be used to measure the DP across the valve
and determine when the DP is invalid and as such zero the cfm
feedback signal. If this state is enabled, then the Gain PressSen,
Offset PressSen, and No Flow Press values also need to be valid
and set. Use DI as DP, Use Digital Sensor, and Unit is VAV Box
need to be un-selected.
If DP monitoring is required, but a DP switch is to be used in lieu
of a pressure sensor, then the Use DI as DP (see Figure 5) check
box should be selected and the Use Press Sens as DP should be
un-selected. In this case a suitably calibrated DP switch would
monitor the pressure across the valve and make/break contact
when the pressure fell below the specied valve minimum
operating pressure.
The normally closed / normally open (NC / NO) mode of
operation for the switch can be set with the state of the DP
Switch NC. When selected, it is inferred that the DP switch is
normally closed and opened when the pressure falls below the
specied value.
The Float DO is DP Out (see Figure 5) setting is used to allow
the pressure sensor, when used to monitor DP, or the DP sensor
state to be reported. This would typically be used to create a
pseudo DP switch with a pressure sensor.
Here the pressure sensor and the UVM pressure settings would
allow the DO act as the output of a DP switch for use on other
controllers to 0 the cfm reading. When this is selected, the
oating actuator output control cannot be used. As it would be
logical to use the pressure sensor for measuring the valve DP,
the Use Press Sens as DP check box should be selected.
The Use Digital Sensor check box will enable a specic digital
sensor to be used in lieu of the analog pressure sensor. The
digital sensor uses an I2C communications media to talk to the
UVM. Normally this setting should be left un-selected. This is a
legacy setting and may be removed in future revisions.
The Unit is VAV Box check box is used to set the UVM mode
to compute cfm from a VAV box ow probe instead of using
a Venturi valve lookup curve. The Gain PressSen and Offset
PressSen elds need to be set in order to calibrate the used
pressure sensor, and the VAV Box K Factor and VAV Box Area
settings need to be accurately set for proper computation of the
VAV box air ow.
Use Press Sens as DP typically needs to be un-selected. The
sensor pressure, air velocity, and air ow can be viewed under
the Dynamic Values Tab.
The Io Used for Min Press setting (see Figure 5) is applicable to
UVM revisions (S series) that provide for networked UVM units.
This may read as being set, but can be ignored. When selected,
and if this UVM is a primary, it will monitor the networked UVM’s
DP pressure values (they need to use pressure sensors) and
determine the minimum pressure value from all the units.
This scaled minimum pressure value will be output on the Io
connection on the UVM. This infers that the actuator cannot be
used on this UVM. The minimum pressure value can be used
by OEM control systems to regulate the fan system to a value
where the lowest valve DP is just above the minimum specied
DP value for valid operation. This setting has no meaning on
standalone UVMs that are not of the S (summing)series, nor
have the primary address. This can be left unchecked, and
ignored if reported as active.
The FB (not time) Float Act setting applies to when t he UVM is
using a oating actuator on the CCW and CW connections rather
than an analog actuator on the Io connector. When not selected,
the oating actuator will determine position purely by keeping
track of run time in the up or down direction. For example, 50%
position would be an accumulated +UP, -DOWN time equal to
half the Flt Stroke Time setting. A oating actuator does not have
high positional accuracy as it can slip depending on load. By
setting this check box, the actuator is positioned only by use of
the UVM / Valve FB sensor reading (via the cfm Table), and not
by running times.
The Use DIP Switches check box (see Figure 5), allows the DIP
Switch Equivalents settings to either be derived from the DIP
switches, or by previously set values by the Conguration Tool.
If this check box is selected, then the cfm (not Pos) Output, cfm
(not Pos) Input and Reverse Acting (2) selections are derived
from the DIP switches 5, 6 and 7 settings. The settings by the
Conguration Tool are ignored. If this box is un-selected, then
the DIP switches 5, 6, and 7 are ignored and the cfm (not Pos)
Output, cfm (not Pos) Input and Reverse Acting (2) settings are
as set by the Conguration Tool.

TRIATEK UVM-1000 Specifications

General

Brand	TRIATEK
Model	UVM-1000
Category	Control Unit
Language	English