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Red Lion LDSS User Manual

Model ld - large serial slave display, General description, Safety summary

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1

AIR PRESSURE STABILIZATION VENT

(57.15)

2.25

X

Z

Y

GENERAL DESCRIPTION

The Large Serial Slave Display is a versatile display that accepts serial ASCII

data from a host device and displays the received characters. The displayable
data includes numeric, 7-segment alphabetic and certain punctuation characters.

The 6-digit displays are available in either 2.25" or 4" high red LED digits

with adjustable display intensity. The 2.25" high models are readable up to 130
feet. The 4" high models are readable up to 180 feet. Both versions are
constructed of a NEMA 4X/IP65 enclosure in light weight aluminum.

The Serial Slave has two internal display buffers, allowing two separate

display values or messages to be viewed. The main (primary) display typically
shows dynamic data (count, rate, process, etc.), usually received directly from
another meter. The secondary display typically shows a fixed message or value,
such as a system or machine identifier, or a target production value. The main
and secondary displays can be toggled either manually or automatically at a user
selected toggle speed. Both displays are retained in memory when power is
removed from the unit.

For single meter remote display applications, the Serial Slave can be

connected directly to a Red Lion (or compatible) meter with RS232 or RS485
serial communications. The slave can display the meter value on its main display
without requiring a PC or other serial interface.

Multiple slaves are connected using an RS485 serial bus. If unique meter

addresses are assigned, specific data can be displayed by a single slave on the
bus. When multiple slaves are assigned the same address, common data can be
displayed by multiple units in different locations.

Serial communications parameters are fully programmable, with baud rates

up to 38.4 Kbps. Special command characters allow display selection and
display intensity adjustment through the serial input. In addition to the serial
input, a programmable User Input is provided to perform a variety of meter
functions.

SAFETY SUMMARY

All safety regulations, local codes and instructions that appear in this and

corresponding literature, or on equipment, must be observed to ensure personal
safety and to prevent damage to either the instrument or equipment connected to
it. If equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.

Do not use this unit to directly command motors, valves, or other actuators

not equipped with safeguards. To do so can be potentially harmful to persons or
equipment in the event of a fault to the unit.

SPECIFICATIONS

1. DISPLAY: 6-digit 2.25" (57 mm) or 4" (101 mm) adjustable intensity Red LED

2. POWER REQUIREMENTS:

AC POWER: 50 to 250 VAC 50/60 Hz, 26 VA
DC POWER: 21.6 to 250 VDC, 11 W
Isolation: 2300 V

RMS

for 1 min. to all inputs and outputs

3. SERIAL INPUT:

RS485 SERIAL COMMUNICATIONS

Type: Multi-point balanced interface (isolated)
Baud Rate: 300 to 38400
Data Format: 7/8 bits; odd, even, or no parity
Bus Address: 0 to 99; max 32 meters per line

RS232 SERIAL COMMUNICATIONS

Type: Half duplex (isolated)
Baud Rate: 300 to 38400
Data Format: 7/8 bits; odd, even, or no parity

4. USER INPUT (Programmable Function Input):

Active low logic, internal 7.8 K

 pull-up resistor to +12V.

Trigger levels: V

IL

= 1.0 V max; V

IH

= 2.4 V min; V

MAX

= 28 VDC

Response time: 10 msec typ; 50 msec debounce (activation & release)

MODEL LD - LARGE SERIAL SLAVE DISPLAY

DIMENSIONS In inches (mm)

Bulletin No. LDSS-D
Drawing No. LP0703
Released 09/10

Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion.net

CAUTION: Risk of Danger.

Read complete instructions prior to

installation and operation of the unit.

CAUTION: Risk of electric shock.

CC

US LISTED

US LISTED

UL

R

51EB

IND. CONT. EQ.

The protective conductor terminal is bonded to conductive

parts of the equipment for safety purposes and must be
connected to an external protective earthing system.

2.25" or 4" HIGH RED LED DIGITS

DISPLAYS UP TO 6 DIGITS OF SERIAL ASCII DATA

DUAL DISPLAY BUFFER ALLOWS ALTERNATING DISPLAYS

RS232 OR RS485 SERIAL INTERFACE

CONNECTS DIRECTLY TO RED LION PRODUCTS WITH SERIAL

PROGRAMMABLE USER INPUT

UNIVERSALLY POWERED

ALUMINUM NEMA 4X/IP65 CASE CONSTRUCTION

PART

NUMBER

X (Length)

Y (Height)

Z (Center)

LD2SS6P0 16 (406.4) 4 (101.6)

12 (304.8)

LD4SS6P0 26 (660.4) 7.875 (200) 22 (558.8)