Red Lion LDSS - Manual

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)