DigiTrace RAYSTAT-ECO-10 Посібник - Сторінка 4
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Друкувати сторінкуDescription
RAYSTAT-ECO-10 is an electronic controller with display, advanced alarm
facilities and the capability of switching large currents.
The RAYSTAT-ECO-10 is designed to control heating cable systems. Heating
cable can be controlled either directly by the RAYSTAT-ECO-10 or via a con-
tactor.
Direct switching of heating cables is possible for heating loads up to 25 A.
For heating loads greater than 25 A indirect switching via a suitably rated
contactor controlled by a RAYSTAT-ECO-10 is necessary.
Installation and all wiring must be in accordance with applicable regulations.
The device must be installed in non hazardous areas only.
Tyco Thermal Controls offers other controls for use in hazardous areas.
Technical data
Supply voltage:
230 Vac. +10%/–10%, 50/60 Hz (6V leakproof
maintenance-free non-rechargeable battery
incl. for programming without power supply)
Main relay:
max. 25 A, 250 Vac. Resistive
Heater operation on
sensor error:
programmable: ON or OFF
Set point T range:
0°C to + 30°C
Accuracy:
±0,5 K at 5°C
Operatingtemperature:
–40°C to +40°C ambient
User interface:
4 x 7 segment digital display
4 push buttons
alarm relay, max. 2 A, 250 Vac. (Potential free)
Power terminals:
3 x 0,75 mm
Alarm terminals:
(3 + ) x 0,75 mm
Sensor terminals:
(3 + ) x 0,75 mm
Heater terminals:
(2 + ) x 0,75 mm
Enclosure
Exposure Temperature:
–40°C to +80°C
Ingress Protection:
IP 65
Entries:
2 x M25, 1 x M20, 1 x M16
Size:
120 x 160 x 90 mm
Weight:
approx. 800 gr.
Material:
polycarbonate
Lid fixing:
4 captive screws
Mounting:
on a wall or directly on the pipe using support
brackets, SB-100 / SB-101
6
2
2
to 4 mm
2
2
to 2,5 mm
2
2
to 2,5 mm
2
2
to 4 mm
T sensor
Type:
3-wire Pt 100 according to IEC Class B
50 mm x ∅ 6 mm
Sensor head:
* An external Pt 100 sensor can be connected, the sensor cable can be ex-
tended with a 3-core shielded cable of 20 Ω max. per conductor (e.g. up
2
to 150 m with a 3 x 1.5 mm
cable)
Functional description
The Raystat-ECO-10 Controller is used to control heat-tracing freeze protec-
tion systems based on ambient temperature. The controller adjusts the
power of the heating cable by energizing the circuit for a percentage of a
complete cycle. This percentage is determined based on the ambient tem-
perature, the set point, and the minimum expected ambient temperature. The
full cycle time is influenced by pipe diameter.
For example, if the ambient temperature is halfway between the minimum
expected ambient temperature and the set point, the heating cable will be
energized for 5 minutes and be off for 5 minutes (for the smallest pipe size
selected). The actual duty-cycle periods and ratios vary, depending on the
ambient temperature and the above mentioned parameters. This algorithm is
called Proportional Ambient Sensing Control (PASC).
If you are unsure about the min. expected ambient setting, set it to a higher
rather than a lower value to prevent freeze-ups.
In the event of an error, the alarm relay switches and an error code shows on
the display. It is possible to program the status of the heating cable (ON or
OFF) in case of a sensor error.
The unit is fitted with a battery so that programming can be done on the
bench prior to mounting in the working location (see Operational description,
page 11).
Display
RAYSTAT-ECO-10 has a digital display. The three left hand digits 9a are the
value display and the right hand digit 9b is the status display.
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