Install LDA- H
Drawing No. LP0673
Revised 08 2021
1
GENERAL DESCRIPTION
The Large Display is a versatile display available as a DC volt, current,
or process meter with scaling, serial communications and dual relay
outputs. The 5 digit displays are available in either 2.25" or 4" high red
LED digits with adjustable display intensities. 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.
All models also come with dual Form C relay outputs and RS232 /
RS485 serial communications.
SAFETY SUMMARY
All safety related regulations, local codes and instructions that appear
in this document or on equipment must be observed to ensure personal
safety and to prevent damage to either the device or equipment
connected to it.
Do not use these products to replace proper safety interlocking. No
software-based device (or any other solid-state device) should ever be
designed to be responsible for the maintenance of personnel safety or
consequential equipment not equipped with safeguards. Red Lion
disclaims any responsibility for damages, either direct or consequential,
that result from the use of this equipment in a manner not specified.
ORDERING INFORMATION
MODEL NO. DESCRIPTION
PART NUMBER
LD2A
2.25" High 5 Digit Red LED Volt/Current Meter w/
Relay Output and RS232/RS485 Serial Comms
LD2A05P0
LD4A
4" High 5 Digit Red LED Volt/Current Meter w/
Relay Output and RS232/RS485 Serial Comms
LD4A05P0
LD Plug
Cord Grip Plug for LD models *
LDPLUG00
* Required to maintain Type 4X/IP65 specification, if end plate cord grip does not
have cable installed.
SPECIFICATIONS
1.
DISPLAY
: 5 digit, 2.25" (57 mm) or 4" (101 mm) intensity adjustable
Red LED (-99999 to 99999)
2.
POWER REQUIREMENTS
:
AC POWER: 50 to 250 VAC 50/60 Hz, 26 VA
DC POWER: 21.6 to 250 VDC, 11 W
DC Out: +24 VDC @ 100 mA if input voltage is greater than 50 VAC/
VDC +24 VDC @ 50 mA if input voltage is less than 50 VDC
Isolation: 3000 Vrms for 1 min. to all inputs and outputs
3.
INPUT RANGES
: Jumper Selectable
D.C. Voltages
: 200 mV, 2 V, 20 V, 200 V, 10 V
INPUT
RANGE
ACCURACY @
23
°
C LESS
THAN 85% RH
INPUT
IMPEDANCE
MAX
INPUT
SIGNAL
RESOLUTION
TEMP.
COEFFICIENT
200 mV
0.1% of span 1.033 M
Ω
75 VDC
10 µV
70 ppm /°C
2 V
0.1% of span 1.033 M
Ω
75 VDC
0.1 mV
70 ppm /°C
10 V
0.1% of span 1.033 M
Ω
250 VDC
1 mV
70 ppm /°C
20 V
0.1% of span 1.033 M
Ω
250 VDC
1 mV
70 ppm /°C
200 V
0.1% of span 1.033 M
Ω
250 VDC
10 mV
70 ppm /°C
D.C. Currents
: 200
µ
A, 2 mA, 20 mA, 200 mA
INPUT
RANGE
ACCURACY @
23
°
C LESS
THAN 85% RH
INPUT
IMPEDANCE
MAX
INPUT
SIGNAL
RESOLUTION
TEMP.
COEFFICIENT
200 µΑ
0.1% of span
1.111 K
Ω
15 mA
10 nA
70 ppm /°C
2 mA
0.1% of span
111
Ω
50 mA
0.1 µA
70 ppm /°C
20 mA
0.1% of span
11
Ω
150 mA
1 µA
70 ppm /°C
200 mA 0.1% of span
1
Ω
500 mA
10 µA
70 ppm /°C
D.C. Process
: 4 to 20 mA, 1 to 5 VDC, 0/1 to 10 VDC
INPUT RANGE
SELECT RANGE
4 - 20 mA
Use the 20 mA range
1 - 5 VDC
Use the 10V range
1 - 10 VDC
Use the 10V range
4.
OVERRANGE/UNDERRANGE INDICATION:
Input Overrange Indication
: “
OLOL
”.
Input Underrange Indication
: “
ULUL
”.
Display Overrange/Underrange Indication
: “
.....
”/“-
.....
”
CAUTION: Risk of Danger.
Read complete instructions prior to
installation and operation of the unit.
CAUTION:
Risk of electric shock.
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" & 4" HIGH RED LED DIGITS
PROGRAMMABLE SCALING AND DECIMAL POINTS
PROGRAMMABLE USER INPUT
DUAL 5 AMP FORM C RELAY
ALUMINUM NEMA 4X/IP65 CASE CONSTRUCTION
RS232/RS485 SERIAL COMMUNICATIONS
UNIVERSALLY POWERED
MODEL LD - Large DC Volt/Current/Process Display
AIR PRESSURE STABILIZATION VENT
(57.15)
2.25
X
Z
Y
DIMENSIONS In inches (mm)
22 (558.8)
12 (304.3)
Z (Center)
7.875 (200)
26 (660.4)
LD4A05P0
4 (101.6)
16 (406.4)
LD2A05P0
Y (Height)
X (Length)
PART
NUMBER
CC
US LISTED
US LISTED
UL
R
IND. CONT. EQ.
E137808
CC
US LISTED
US LISTED
UL
R
PROCESS CONTROL EQUIPMENT
E179259
