Chromalox DTS-HAZ Manuel d'instructions d'installation - Page 8
Parcourez en ligne ou téléchargez le pdf Manuel d'instructions d'installation pour {nom_de_la_catégorie} Chromalox DTS-HAZ. Chromalox DTS-HAZ 12 pages. Microprocessor based temperature control and power connection kit
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Start-Up
For up to 30 amp loads, use minimum 10 AWG
wiring or better for 120/277 VAC power input.
Connecting power to the unit.
1. Powering up with 120/277 VAC: To power up the
unit apply 120/277 VAC to the terminal block ac-
cording to the schematic below:
Connections for Power, Cable and Earth Ground
AC Power, Earth & Heating Cable
Terminal Blocks
Protective
Ground
2. Programming with 9VDC battery:
The DTS-HAZ may be programmed with a 9VDC
battery should standard service line voltage be un-
available.
Note: Powering unit with 9VDC should only be used
for programming purposes and not operation of the
unit.
Programming of the 9 VDC battery shall not be
done in hazardous locations.
3. Programming and alarm overview
Digital Thermostat must have the following compo-
nents set to correctly control the temperature:
a. Setpoint – targeted temperature value that con-
troller will aim to reach
b. Hi Temperature Alarm – Temperature at which
the unit goes into high temperature alarm mode.
c. Lo Temperature Alarm – Temperature at which
the unit goes into low temperature alarm mode.
d. Deadband – The allowable temperature differen-
tial between the Set Point and the Sensed Tem-
perature during normal operation. The Deadband
is centered on the Setpoint. The Deadband has a
range of 2 to 10 deg. in 2 degree increments.
Connecting RTD Wire
1. Connect RTD wire according to the schematic:
L or L1 – IN
(AC High)
Cable OUT
Cable OUT
N or L2 – IN
(AC Low)
Alarm Wiring
The alarm on the DTS unit is a non-arcing, solid state
relay. In order for it to properly function, it must be sup-
plied with either AC or DC voltage, depending on which
model is selected. The alarm on the DTS-HAZ func-
tions only with AC voltage. The alarm on the DTS-HAZ-
DC functions only with DC voltage.
8
The Load is removed once the temperature is 1/2
way between the Setpoint and the upper limit of
the Deadband.
e. Temperature Units – selection between degrees
Fahrenheit or Celsius.
f. Soft Start Function – The soft start may be en-
abled or disabled. When enabled, the Soft start
algorithm initiates at power on & whenever low
end of dead band is realized. When initiated, 0%
- 100% Power is achieved over 167 seconds.
g. Alarm State – The FACTORY DEFAULT SETTING
IS NORMALLY CLOSED. You may toggle this
setting to Normally Open via the control push
buttons.
RTD
+
White
Com
-
RTD
+
RTD
DTS Alarm Wiring Options
DTS-HAZ
Load
AC
12-277 VAC
Customer Supplied
-
COM
Red
Red
3 Wire RTD
DTS-HAZ-DC
+
-
Load
+
=
DC
0-42 VDC
Customer Supplied