Ds 2b Controller Datasheet

8/2/2019 Ds 2b Controller Datasheet

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The DS-2B is the base model of the DS series. It is pri-

marily designed for small satellite antenna/broadcast

tower de-icing, pavement snow melng applicaons,

and used as a sensor for larger control systems. The unit

may also be used as a stand-alone rain diversion con-

troller for Ku band satellite applicaons.

The unit is housed in a two gang PVC enclosure. The

overall dimensions of the DS-2B are 4(120) x 7(178)

x 2(70). The unit weighs 2 pounds. The user may

access all electronics by removing the four front cover

screws.

The DS-2B can be powered from either a 100-120 VAC

or 200-240 VAC 50/60Hz source. Peak power consump-

on is 15 was. Voltage selecon is performed by in-

stalling provided jumpers onto the printed circuit board.

The unit provides a single 240VAC @ 30A normally openload contact set. This contact set is paralleled with a low

power contact set to provide remote acvaon moni-

toring. Operaonal temperature range is -40C to +85C.

An environmentally sealed control switch is provided.

The Manual On funcon acvates the controlled

equipment for tesng and special operaonal condi-

ons. The Automac posion allows the DS-2B to

handle all detecons and control. The Standby/Reset

posion disables triggering and can also be used to clear

the delay o mer from true or test acvaon. Remote

control and monitor up to 1000 feet away is also avail-

able when the oponal C/M cable listed is installed. The

DS-2B is also compable with the DP-7B, DP-7EX, and

CDP-2 remote control/status panels.

A new feature has been added to the DS-2B. If the

switch is placed in Manual On for less than 2 seconds,

then switched back to Automac the controller will

execute one delay o cycle. The delay o cycle is de-

termined by the DEL switch seng and the DEL adjust-

ment, i.e., 2 minutes in sensor mode, 30-90 minutesin controller mode. This can be used to clear surfaces

with a frost or hail buildup without the danger of leav-

ing the system in a connuous Manual On condion.

Standby/Reset can sll be used to clear this delay o

cycle.

CONTROLS & MONITORING

THE DS2B RAIN/SNOWSENSOR CONTROLLER

Automac Acvaon means Lower De-icing Costs

Reliable Rain and Snow Detecon

Full 30A @ 240VAC Control

Field Strap for 100-120/200-240 VAC Operaon

Replaceable Precipitaon Sensor

Easy Installaon, Full Access to Electronics

8 Dierent Funcons, 1 Part Number

Adjustable Temperature Trigger Point

Adjustable Delay O Cycle

Selectable Low Temperature Cuto

Smart Manual On Operates for One Delay O Cycle

High Power, Low Price!

(866) 635-8123

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The table below outlines the operang modes for the

DS-2B. Trigger Temperature (TT) is adjustable from

34F-44F using an on-board control. When ambient air

temperature (AT) is below this trigger point precipitaonis assumed to be snow or freezing rain. When above the

trigger point, precipitaon is assumed to be rain.

Delay O refers to the internal drying cycle mer of

the DS-2B. The mer is used to allow the DS-2B to dry

the heated surface through evaporaon once precipita-

on has stopped. The drying cycle reduces the chance

that moisture le behind by the melng process will

refreeze into ice. This mer is restarted by each precipi-

taon detecon. Therefore, the DS-2B will connue to

operate as long as precipitaon and trigger temperature

is detected, then for the Delay O me once rain or

snow stops. It is assumed that, when operang as a

sensor, the DS-2B is supplying an acvaon signal to an

external control system. All sensor modes provide a

minimum 2 minute closure to reducing cycling of the ex-

ternal controller. When in a controller mode the Delay

O me can be adjusted from 30-90 minutes. Properadjustment assures drying without excessive runme.

The Low Temperature Cuto (LTC) opon is typically

used on de-icing or snow melng systems with limited

output capacity. If selected, the sensor will not trigger if

precipitaon is detected below 15oF. However, if the de-

icing system has been acvated, precipitaon connues,

and the ambient temperature drops below 15oF, LTC will

be ignored. This assures that water le behind on the

surface during the heang cycle will not immediately

refreeze into ice as a result of deacvang the de-icing

system.


FUNCTION

AMBIENT

TEMP AT DELAY OFF APPLICATION

Snow sensor w\o LTC AT < TT 2 Min Snow and ice alert, Sensor for external deice/snow melt controller

(unlimited heat)

Snow sensor w\LTC TT>AT>15F 2 Min Sensor for external deice/snow melt controller (limited heat)

Snow controller w\o LTC AT < TT 30-90 Min Stand-alone controller for satellite antenna/tower de-icing and

electric/hydronic snow melng

Snow controller w\LTC TT>AT>15F 30-90 Min Stand-alone controller for satellite antenna/tower de-icing and

electric/hydronic snow melng

Precipitaon sensor Not Used 2 Min Snow, ice, and rain alert, Ku band rain and snow diversion

Precipitaon controller Not Used 30-90 Min Snow, ice, and rain alert, Ku band rain and snow diversion

Rain sensor AT>TT 2 Min Rain alert, Ku band rain diversion

Rain controller AT>TT 30-90 Min Ku band rain diversion

(866) 635-8123



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DS2B SPECIFICATIONSDimensions 4(120) x 7(178) x 2(70)Weight 2 Lbs. (0.9 Kg)

Operang Temperature -40F to +185F (-40C to +85C)

Enclosure Rang NEMA 3R

Supply Power 100-120VAC/200-240VAC Field Selectable

15W maximum

Trigger Temperature 34F-44F (1.1C-6.6C) Field Selectable

Delay O (Sensor) 2 Minutes

Delay O (Controller) 30-90 Minutes Field Selectable

Load Contact Capacity 30A @ 240 VAC/100,000 operaons mini-

mum at full load

Monitor Contact Capacity 24 VDC/VAC 400mA 10W total


(866) 635-8123


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Ds 2b Controller Datasheet