Precision Digital Corporation MOD-PD2LH Series User manual

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PRECISION DIGITAL CORPORATION
MOD-PD2LH Series PD2 & PD4 Light/Horn Modication
Instruction Manual
• Light/Horn and Button Mounted and Wired to Meter
• Single Lights in Red, Green, Yellow, Blue, or White Available
• Units with One of Five User Selectable Lights Available
• Three Color Light Stack with Red, Yellow, and Green Lights Available
• Light/Horn Powered from Meter or External Power Supply
• Light and Horn Can be Controlled Independently Using Separate Relays
• Light/Horn Programmable for Variety of Reset Functions, Including:
• Silence Horn at Any Time
• Light Stays on Until Alarm Clears
• Light Can Be Wired to Flash or Stay Steady On
• IP65 Rated
• 85 dB Horn
• Operates from -5 to 40°C (23 to 104°F)
• Control Station Accessory For Remote Operation of Light/Horn Button
Watch the Light/Horn
Video
Click or scan
Meters Shown with MOD-PD2LHRB1
Red Light/Horn and Button.
Meters Sold Separately.
5 Colors 3 Color StackWhite
Red Green Yellow Blue

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2
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
OVERVIEW
Transform a Precision Digital PD2 and PD4 series meter
into an efcient display, control, and alarm system with
the MOD-PD2LH series. It provides a light/horn to boost
visibility of alarm conditions, a button that connects to the
meter's digital input to control or reset the alarms, and hole
drilling on the enclosure for both the light/horn and button.
Also included is the light/horn and button installation and
wiring to the meter. Meter is sold separately.
What's Included
Light/Horn Button and
9 Labels
Hole Drilling
on Enclosure
MeterInstallation and
Wiring
Overall, the MOD-PD2LH series is a simple solution for PD2
and PD4 series meters that adds audible and visual ways to
indicate critical alarms.
Installation of the light/horn accessory voids all of the PD2
and PD4 agency approvals. The NEMA 4X and IP65 ratings
are not affected.
Red Light
with 85 dB Horn
PD2 and PD4 Meters Shown with MOD-PD2LHRB1
Red Light/Horn and Button.
Meters Sold Separately.
Button
(9 Labels Provided)

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3
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
Power Options
Precision Digital meters with an internal transmitter
power supply can provide up to 200 mA to power the
transmitter and other devices including the light/horn. See
Specications for details on power consumption.
If a meter connected to the light/horn does not have an
internal transmitter power supply or more power is required
than the meter provides, then consider the PDA1024 - 01
24 VDC transmitter power supply.
Control Capabilities
The light and horn can be controlled independently of each
other using separate relays on the Precision Digital meter
they are connected to. These relays can be programmed for
automatic or manual reset action to satisfy a wide variety of
audible and visual alarm applications.
Hole Drilling Locations
All MOD-PD2LH models provide hole drilling on enclosure
for light/horn and button. See below for hole locations for
both the light/horn and button.
(9) Printed Labels Provided
Button
The button connects to the meter's digital input and it can
be used to remotely control the light/horn such as resetting,
acknowledging, or silencing an alarm. Nine (9) printed
labels are provided to identify the button's action including:
RESET, BATCH, ACK, TARE, SILENCE, STOP, START,
PAUSE, and START/STOP.
Light/Horn
The light/horn is available in three different light
congurations and each comes with a built-in 85 dB horn.
The rst light option is a single color light in either red,
green, yellow, blue, or white. The second light option is a
user selectable light with ve color options in either red,
green, yellow, blue or white. Simply connect the appropriate
wire to display the desired light color. The third option is a
light stack with red, yellow, and green lights that can turn on
independently (not compatible with PD4).
5 Colors 3 Color Stack
WhiteRed Green Yellow Blue
The light can be wired to ash (not available on MOD-
PD2LH5CB1) or stay steady on. Both the light and horn can
be controlled independently of each other using separate
relays on the meter, and may be reset in a variety of ways
based on the connected meter's relay reset capabilities.
Light/horn
The light/horn hole is on the top-left of the enclosure.
Button
The button is centered on the cover of the enclosure below
the display.

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4
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
MOD-PD2LH Models
Connections shown for a red light
model. For other MOD-PD2LH
models, the red wire is the color of the
light. Connect the red and black wires
for a Steady On light and red and gray
wires for Flashing light.
CONNECTIONS
MOD-PD2LH5CB1
Connect the LED color to the plus
supply and the black wire to the minus
supply to turn the LED on. Be aware
of limitations for applications requiring
different color lights for different alarm
conditions.
MOD-PD2LH3LCB1-RYG
Connect the LED color to the plus
supply for a Steady On light and
LED color and gray wires to the plus
supply for Flashing light. The black
wire should be connected to the minus
supply.
Horn
Red LED
Steady On
Flashing
Power
PURPLE
PURPLE
RED
BLACK
GRAY
BROWN
BROWN
User
Selectable
LED
Minus
Supply
BLACK
Horn
PURPLE
GREEN
WHITE
RED
BLUE
YELLOW
GRAY
PURPLE
BLACK
RED
YELLOW
GREEN
Flashing
Layered
LEDs
Horn
Minus
Supply

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MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
NO
NC
CNO
NC
C NONCC NO NCC
4
36521
RELAY4RELAY3
4
36521
RELAY2RELAY1
P- COMP+ V+ mA+
3 41 2 5
F4
6
SIGNAL
Reset Button
To Black
Wire on
Light Cable
NO
NC
CNO
NC
C NONCC NO NCC
4
36521
RELAY4RELAY3
4
36521
RELAY2RELAY1
P- COMP+ V+ mA+
3 41 2 5
F4
6
SIGNAL
Reset Button
To Black
Wire on
Light Cable
NO
NC
CNO
NC
C NONCC NO NCC
4
36521
RELAY4RELAY3
4
36521
RELAY2RELAY1
P- COMP+ V+ mA+
3 41 2 5
F4
6
SIGNAL
Reset Button
MOD-PD2LH Models
The MOD-PD2LH models are the simplest devices in the series and are made
up of a single-color light and horn. A typical way to use the MOD-PD2LH is to
program the meter so that the horn can be silenced at any time via a button
connected to the meter's digital input or via the F3 front panel button, and the light
to reset automatically when the alarm clears:
Relay Connected to Default Reset Mode
1Flashing Light(1) Auto reset
2Horn Silence with Button at any time
3User Device As user desires
4User Device As user desires
1. Light can be wired to ash or stay steady on.
APPLICATIONS
There are a wide variety of ways these light/horn devices can be controlled by Precision Digital meter's relays to satisfy
visual and audible alarm applications. Feel free to contact tech support to discuss your particular application. The following
examples illustrate some typical applications.
MOD-PD2LH3LCB1-RYG
The MOD-PD2LH3LCB1-RYG can light up red, yellow or green lights as determined
by which wires are connected to power through the meter's relays. A typical
application for the MOD-PD2LH3LCB1-RYG (and the default factory setting) might
involve lighting up the green light to indicate everything is OK, the yellow light to
indicate a High warning, and the red light to indicate a High alarm. The Horn will also
sound at both the Warning and High alarms and can be manually reset at any time
via a button connected to the meter's digital input or via the F3 front panel button:
Relay Purpose Range Light/Horn Action
1All OK < 199 Green light Auto
2Warning 200 to 500 Yellow light Auto
3Warning 200 to 500 Horn Latch
2High alarm > 500 Red light Auto
4High alarm > 500 Horn Latch
MOD-PD2LH5CB1
The MOD-PD2LH5CB1 shows one color at a time and the light color (red, green,
yellow, blue or white) is determined by which wires are connected to power
through the meter’s relays. A typical application for the MOD-PD2LH5CB1 might
involve lighting up the red light to indicate high and low alarms and the green light
to indicate everything is OK using a Precision Digital meter's four internal relays:
Relay Purpose Range Light/Horn Action
1Low alarm < 199 Red light Auto
3Low alarm < 199 Horn Latch
2All OK 200 to 500 Green light Auto
2High alarm > 500 Red light Auto
4High alarm > 500 Horn Latch
PD2 meter with internal transmitter power
supply connections shown
PD2 meter with internal transmitter power
supply connections shown
PD2 meter with internal transmitter power
supply connections shown

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6
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
ACCESSORIES
Precision Digital offers accessories to complement any
light/horn alarm system. These accessories include control
stations, and a 24 VDC power supply to drive the light/horn.
PDA2360 Control Stations
The PDA2360 series of plastic control stations are IP65,
NEMA 4, 4X, and 13 rated, and provide a convenient way to
remotely control the light/horn such as resetting an alarm,
acknoledging an alarm, or silencing an alarm. The control
stations come pre-assembled with knockouts on the top and
bottom for convenient wiring and two mounting holes on the
back for wall mounting.
PDA1024-01 24 VDC Power Supply
The PDA1024 - 01 1.5 A, 24 VDC power supply can be used
to power the light/horn when the connected meter does not
have an internal transmitter power supply or when additional
power is required. The PDA1024-01 is DIN rail mountable
and is a UL recognized component.
Model Description
PDA2361-A Ack Button
PDA2361-R Reset Button
PDA2361-Q Silence Button
Model Description
PDA1024 - 01 24 VDC Transmitter Power Supply
PDA1002 6" DIN Rail Mounting Kit
CUSTOM INSTALLATIONS
MOD-PD2LH individual components are also sold
separately for custom user installations.
PDA-LH Light/Horn Accessory
The PDA-LH series light/horn accessory can be connected to
select Precision Digital meters to provide better visibility and
control of alarm conditions. It is available in three different light
congurations and each comes with a built-in 85 dB horn.
Model Description
PDA-LHR Red Light/Horn
PDA-LHG Green Light/Horn
PDA-LHY Yellow Light/Horn
PDA-LHB Blue Light/Horn
PDA-LHW White Light/Horn
PDA-LH5C Light/Horn with User Choice of Red, Green,
Yellow, Blue or White Light
PDA-LH3LC-RYG Light Stack/Horn with Red, Yellow, Green
Lights
PDA-BUTTON Momentary Pushbutton
The PDA-BUTTON is an IP67 fully sealed momentary
pushbutton that can be used to silence the horn or turn off
the light. The pushbutton is available in red, black, or green.
These fully sealed pushbuttons are SPST-NO so they will
satisfy a variety of circuit requirements.
Model Description
PDA-BUTTON1R Red Momentary Pushbutton
PDA-BUTTON1G Green Momentary Pushbutton
PDA-BUTTON1B Black Momentary Pushbutton

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MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
WIRING DIAGRAMS
PD4 Loop Leader+ Series Connections
IMPORTANT
• The MOD-PD2LH light/horn ships installed and wired to the meter as shown in the diagrams below.
• A PDA1024-01 external power supply is required to power up the light/horn (sold separately).
• User wiring to the external power supply is required. See wiring connections below for reference.
USB
4
3
21
OC OUTPUTS
01+ 01- 02+ 02-
4
3
21
INPUTS
DI+ DI- mA- mA+
4
3
21
SSR OUTPUTS
C NO C NO
RLY 2 RLY 1
21
BACKLIGHT
BL+ BL-
21
mA OUT
I+ I-
MENU
MENU
F1
ENTER
NEXT UP ENTER
F2 F3
REMOTE
CONTACTS
M R U E G
Purple (Horn)
Purple (Horn)
Blue, Green, Red, White, or Yellow (Light)
Grey (Flashing Light)
Brown (Power)
Brown (Power)
Reset Button
Black (Steady On)
PDA1024-01
24V External
Power Supply
MOD-PD2LH Models Using External Power Supply (PDA1024-01)
USB
4
3
21
OC OUTPUTS
01+ 01- 02+ 02-
4
3
21
INPUTS
DI+ DI- mA- mA+
4
3
21
SSR OUTPUTS
C NO C NO
RLY 2 RLY 1
21
BACKLIGHT
BL+ BL-
21
mA OUT
I+ I-
MENU
MENU
F1
ENTER
NEXT UP ENTER
F2 F3
REMOTE
CONTACTS
M R U E G
Purple (Horn)
Red (Light)
24 V Power
Brown (Power)
Reset Button
Blue (Light)
Yellow (Light)
Green (Light)
White (Light)
PDA1024-01
24V External
Power Supply
MOD-PD2LH5CB1 Models Using External Power Supply (PDA1024-01)

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8
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
PD2 Helios Series Connections (Internal Power)
IMPORTANT
• The MOD-PD2LH light/horn ships installed and wired to the meter as shown in the diagrams below.
• Wiring shown for PD2 meters with an internal power supply.
R I-I+
+-
P- COMP+ V+ mA+
3 41 2 5
NO
NC
C
21
F4
6
1
2
3
4
5
6
7
8
P+/P-
24V 10V 5V
RS-485
DIGITAL I/O
M-LINK
USB
MENU RIGHT UP ACK
POWER
PWR TX RX
DI DI DO DO
O1 O2 O3 O4 G
I1I2I3I4+5
__ __
NO
NC
C NONCC NO NCC
MA OUT
21 34
36521
RELAY4RELAY3
43 6521
RELAY2RELAY1
SIGNAL
MENU RESET
F1
MAX
F2
ENTER
F3
Purple (Horn)
Purple (Horn)
Blue, Green, Red, White, or Yellow (Light)
Grey (Flashing Light)
Brown (Power)
Brown (Power)
Black (Steady On)
Reset Button
MOD-PD2LH Models Using Internal Power Supply
R I-I+
+-
P- COMP+ V+ mA+
3 41 2 5
NO
NC
C
21
F4
6
1
2
3
4
5
6
7
8
P+/P-
24V 10V 5V
RS-485
DIGITAL I/O
M-LINK
USB
MENU RIGHT UP ACK
POWER
PWR TX RX
DI DI DO DO
O1 O2 O3 O4 G
I1I2I3I4+5
__ __
NO
NC
C NONCC NO NCC
MA OUT
21 34
36521
RELAY4RELAY3
43 6521
RELAY2RELAY1
SIGNAL
MENU RESET
F1
MAX
F2
ENTER
F3
Purple (Horn)
Red (Light)
Black (Minus Supply)
White (Light)
Blue (Light)
Yellow (Light)
Green (Light) Reset Button
24 V Power
MOD-PD2LH5CB1 Models Using Internal Power Supply
R I-I+
+-
P- COMP+ V+ mA+
3 41 2 5
NO
NC
C
21
F4
6
1
2
3
4
5
6
7
8
P+/P-
24V 10V 5V
RS-485
DIGITAL I/O
M-LINK
USB
MENU RIGHT UP ACK
POWER
PWR TX RX
DI DI DO DO
O1 O2 O3 O4 G
I1I2I3I4+5
__ __
NO
NC
C NONCC NO NCC
MA OUT
21 34
36521
RELAY4RELAY3
43 6521
RELAY2RELAY1
SIGNAL
MENU RESET
F1
MAX
F2
ENTER
F3
Purple (Horn)
Red (Light)
Black (Minus Supply)
Gray (Flashing)
Yellow (Light)
Green (Light)
Reset Button
24 V Power
MOD-PD2LH3LCB1-RYG Models Using Internal Power Supply

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9
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
R I-I+
+-
P- COMP+ V+ mA+
3 41 2 5
NO
NC
C
21
F4
6
1
2
3
4
5
6
7
8
P+/P-
24V 10V 5V
RS-485
DIGITAL I/O
M-LINK
USB
MENU RIGHT UP ACK
POWER
PWR TX RX
DI DI DO DO
O1 O2 O3 O4 G
I1I2I3I4+5
__ __
NO
NC
C NONCC NO NCC
MA OUT
21 34
36521
RELAY4RELAY3
43 6521
RELAY2RELAY1
SIGNAL
MENU RESET
F1
MAX
F2
ENTER
F3
Purple (Horn)
Purple (Horn)
Blue, Green, Red, White, or Yellow (Light)
Grey (Flashing Light)
Brown (Power)
Brown (Power) Reset Button
Black (Steady On)
PDA1024-01
24V External
Power Supply
MOD-PD2LH Models Using External Power Supply (PDA1024-01)
R I-I+
+-
P- COMP+ V+ mA+
3 41 2 5
NO
NC
C
21
F4
6
1
2
3
4
5
6
7
8
P+/P-
24V 10V 5V
RS-485
DIGITAL I/O
M-LINK
USB
MENU RIGHT UP ACK
POWER
PWR TX RX
DI DI DO DO
O1 O2 O3 O4 G
I1I2I3I4+5
__ __
NO
NC
C NONCC NO NCC
MA OUT
21 34
36521
RELAY4RELAY3
43 6521
RELAY2RELAY1
SIGNAL
MENU RESET
F1
MAX
F2
ENTER
F3
Purple (Horn)
Red (Light)
Black (Minus Supply) –
+
White (Light)
Blue (Light)
Yellow (Light)
Green (Light) Reset Button
PDA1024-01
24V External
Power Supply
24 V Power
MOD-PD2LH5CB1 Models Using External Power Supply (PDA1024-01)
R I-I+
+-
P- COMP+ V+ mA+
3 41 2 5
NO
NC
C
21
F4
6
1
2
3
4
5
6
7
8
P+/P-
24V 10V 5V
RS-485
DIGITAL I/O
M-LINK
USB
MENU RIGHT UP ACK
POWER
PWR TX RX
DI DI DO DO
O1 O2 O3 O4 G
I1I2I3I4+5
__ __
NO
NC
C NONCC NO NCC
MA OUT
21 34
36521
RELAY4RELAY3
43 6521
RELAY2RELAY1
SIGNAL
MENU RESET
F1
MAX
F2
ENTER
F3
Purple (Horn)
Red (Light)
Black (Minus Supply)
Gray (Flashing)
Yellow (Light)
Green (Light)
Reset Button
PDA1024-01
24V External
Power Supply
–
+
24 V Power
MOD-PD2LH3LCB1-RYG Models Using External Power Supply (PDA1024-01)
PD2 Helios Series Connections (External Power)
IMPORTANT
• The MOD-PD2LH light/horn ships installed and wired to the meter as shown in the diagrams below.
• Wiring shown for PD2 meters without an internal power supply.
• A PDA1024-01 external power supply is required to power up the light/horn (sold separately).
• User wiring to the external power supply is required. See wiring connections below for reference.

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10
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
SPECIFICATIONS
General
Installation Holes drilled in enclosure for light/horn and
button. User installation and wiring required.
Environmental Operating Temperature Range:
-5 to 40°C (23 to 104°F)
Approvals Installation of the light/horn accessory voids all of
the PD2/PD4 agency approvals. The NEMA 4X
and IP65 ratings are not affected.
Warranty 1 year parts and labor. See Warranty Information
and Terms & Conditions on www.predig.com for
complete details.
Light/Horn
Light/Horn
Independence
Light and horn can be controlled independently
via separate relays.
Rating IP65
Connection M22
Hole Size 0.875" (22 mm)
Cable Length 3.28 feet (1 meter)
Light Colors MOD-PD2LH Models: Red, green, yellow, blue,
or white. MOD-PD2LH5CB1: User selectable:
red, green, yellow, blue, white.
MOD-PD2LH3LCB1-RYG: Light stack with red,
yellow, green lights (consult factory for other colors).
Light Action Can be wired to ash or stay steady on
(Flashing not available on MOD-PD2LH5CB1)
Horn 85 dB
Overall
Dimensions
2.2" x 4.8" X 2.2" (55 x 122 x 55 mm)
(W x H x D)
Weight 8 oz (227 g)
Button
Rating IP67, NEMA 4X
Connection M16
Hole Size 0.630" (16 mm)
Action Wire to the meter's digital input to reset,
acknowledge, or silence an alarm.
Labels Nine (9) labels provided: RESET, BATCH,
ACK, TARE, SILENCE, STOP, START, PAUSE,
START/STOP
Power
Power Required 24 VDC
Transmitter
Power Supply
Precision Digital meters with an internal transmitter
power supply can supply up to 200 mA to power
the transmitter and other devices including the
MOD-PD2LH series light/horn. The following
tables illustrate how much power is required to
power various light colors and the horn.
MOD-PD2LH and MOD-PD2LH5CB1 Models
Color Power Required Color Power Required
Red 17 mA Blue 15 mA
Green 15 mA White 42 mA
Yellow 23 mA Horn 20 mA
Example:
17 mA (Red Light) + 20 mA (Horn) = 37 mA
total current needed from the 200 mA supply.
Available current = 163 mA
MOD-PD2LH3LCB1-RYG Model
Color Power Required Color Power Required
Red 34 mA Yellow 33 mA
Green 29 mA Horn 38 mA
Example:
33 mA (Yellow Light) + 38 mA (Horn) = 71 mA
total current needed from the 200 mA supply.
Available current = 139 mA
External Power
Supply
If a meter connected to the light/horn does not
have an internal transmitter power supply or
more power is required than the meter provides,
then consider the PDA1024-01 24 VDC
transmitter power supply.

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11
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
METER COMPATIBILITY
Series Models MOD-PD2LH MOD-PD2LH5CB1 MOD-PD2LH3LCB1- RYG Light/Horn Powered by Meter Light/Horn Requires External Power Reset Capabilities
Helios PD2-6000, PD2-6001, PD2-6080, PD2-6081, PD2-6200,
PD2-6210, PD2-6300, PD2-6310 •••• •
PD2-6060, PD2-6100, PD2-6262, PD2-6363, PD2-6400,
PD2-7000 ••• ••
Loop Leader+ PD4-6603, PD4-6604, PD4-6624 • • • •

LIMMODPD2LH_C 11/23
www.predig.com
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA • Tel [phone]
MOD-PD2LH Series PD2 & PD4 Light/Horn Modification Instruction Manual
ORDERING INFORMATION
Light/Horn Modication
Model Description
MOD-PD2LHRB1 Red Light/Horn and Button with Holes Drilled
in Enclosure
MOD-PD2LHGB1 Green Light/Horn and Button with Holes
Drilled in Enclosure
MOD-PD2LHYB1 Yellow Light/Horn and Button with Holes
Drilled in Enclosure
MOD-PD2LHBB1 Blue Light/Horn and Button with Holes Drilled
in Enclosure
MOD-
PD2LHWB1
White Light/Horn and Button with Holes
Drilled in Enclosure
MOD-
PD2LH5CB1
Light/Horn with User Choice of Red, Green,
Yellow, Blue or White Light, Button, and Holes
Drilled in Enclosure
MOD-
PD2LH3LCB1-
RYG
Light Stack/Horn with Red, Yellow, Green
Lights, Button, and Holes Drilled in Enclosure
Notes
• All MOD-PD2LH models provide a light/horn, button, and hole drilling on enclosure
for light/horn and button. Both light/horn and button come installed and wired. Meter
sold separately.
• For meters without an internal power supply, a PDA1024-01 external power supply
is required to power up the light/horn. User wiring to the external power supply is
required. See Wiring Diagrams for reference.
Accessories
General Accessories
Model Description
PDA1002 6" DIN Rail Mounting Kit
PDA1024-01 24 VDC Power Supply for DIN Rail
PDA2360 Series Control Stations
Model Description
PDA2361-A Ack Button
PDA2361-R Reset Button
PDA2361-Q Silence Button
Disclaimer
The information contained in this document is subject to change without notice. Precision
Digital Corporation makes no representations or warranties with respect to the contents
hereof, and specically disclaims any implied warranties of merchantability or tness for
a particular purpose.
©2023 Precision Digital Corporation. All rights reserved.
WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
DIMENSIONS
M22 x 1.5
0.8"
(20 mm)
4.8"
(122 mm)
2.6"
(65 mm)
Ø 2.2"
(55 mm)
Light/Horn
Button
0.20"
(5 mm)
0.31"
(7.8 mm)
20.0"
(500 mm)
0.63"
(16 mm)
0.28"
(7 mm)
M16 x 1 THD
2 x 24 AWG Type 44 stranded primary lead wire
with blue PVF insulation per MIL-W-81044 rated
at -65 to 150°C plain, unstripped ends