olympia electronics GR-750 Series User manual

GR-750x series
Control panels for addressable emergency luminaires
Quick installation guide

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 2 of 15
[2]
Contents
1INTRODUCTION ......................................................................................................................................... 3
1.1 General description.................................................................................................................................. 3
1.2 Safety....................................................................................................................................................... 3
1.3 Terms and definitions .............................................................................................................................. 4
1.3.1 Point................................................................................................................................................. 4
1.3.2 Emergency mode/In emergency...................................................................................................... 4
1.3.3 Inhibit mode ..................................................................................................................................... 4
1.3.4 Loop circuits..................................................................................................................................... 4
1.3.5 Function test .................................................................................................................................... 4
1.3.6 Duration test..................................................................................................................................... 4
2INSTALLATION .......................................................................................................................................... 5
2.1 Mounting the panel .................................................................................................................................. 5
2.2 Power supply connection......................................................................................................................... 6
2.3 Point wiring .............................................................................................................................................. 7
2.4 Configure point address........................................................................................................................... 9
2.5 Wiring verification .................................................................................................................................. 10
3PANEL CONFIGURATION ....................................................................................................................... 11
3.1 Installation procedure ............................................................................................................................ 11
3.2 Troubleshooting ..................................................................................................................................... 12

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 3 of 15
[3]
1 Introduction
1.1 General description
The GR-750x series of control panels for addressable emergency luminaries consists of four models: (GR-
7501, GR-7502, GR-7503 and GR-7504 with 1, 2, 3 and 4 loop circuits respectively). All share the same
interface, functionality, and indicators. Each of the loop circuits can support up to 250 addressable luminaires.
Two 12V lead acid (Pb) batteries are required per panel, with at least 7Ah capacity each.
All GR-750x models include four programmable inputs, two programmable outputs, two 24VDC voltage outputs,
four relays and an Ethernet/Wi-Fi card. A thermal printer is available as an optional accessory.
Panels of the GR-750x series can be connected to form a network of panels, referenced as “Panel network”.
The maximum number of connected panels cannot exceed 24.
The GR-750x series provides an ideal solution for medium to large scale facilities such as department stores,
hotels, factories.
1.2 Safety
WARNING
To ensure safety and proper use of the device read all accompanying documents
carefully and follow the provided instructions.
It is recommended that this product is installed, commissioned, and maintained by trained technician
personnel in accordance with:
•The regional regulations for installation and maintenance of electrical appliances in buildings.
•Manufacturer's instructions.
The device main power supply is rated at 220-240Vac/50-60Hz and is a Class I product (the corresponding
terminal contact with the “Protective Earth” marking ( ), inside the device, must be connected to the building’s
ground to ensure proper function and safety).
The mains power supply of the device must be connected to the building’s electrical installation, with its own
separate power line and circuit-breaker rated at 16A, labeled "Emergency lighting system - Do not switch
off".

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 4 of 15
[4]
1.3 Terms and definitions
1.3.1 Point
The term “point” refers to any addressable device connected to the panel. For example, an emergency
luminaire.
1.3.2 Emergency mode/In emergency
When the system or a point is referred as being in emergency or emergency mode, it means that its mains
power supply is unavailable, and it is operating by drawing power from its battery.
1.3.3 Inhibit mode
A luminaire set in inhibit mode, will not function as an emergency light. If its mains power supply is unavailable,
it will switch off its lamp (if it is a continuous operation luminaire) or it will not switch on (if it is a non-continuous
operation luminaire). Enabling and disabling the inhibit mode can only be done by the user (manually).
1.3.4 Loop circuits
All models of the GR-750X series use the same loop boards, they only differ in number. The loop output
connection terminals come pre-installed with a short-circuit adapter (it links +L to +LF and –Lto –LF terminals,
to form a closed loop circuit).
A loop circuit can operate with up to 250 addresses and a maximum of 250 points connected to it.
1.3.5 Function test
Function test procedure initiates a self-test (operational test) procedure of the luminaires connected to the panel,
to verify their proper operation. No specific equipment is required and can be manually performed at any time
or scheduled at specific days of the week at a certain time. During the test, a LED indicator flashes on the
luminaire indicating the ongoing operation. For more information about the LED indicators of the luminaire, refer
to its manual.
Upon completion of the test, if a problem is detected by the luminaires, the panel will be notified, the
corresponding fault will appear in the fault list with detailed information.
1.3.6 Duration test
Duration test procedure initiates a self-test (autonomy test) procedure of the luminaires connected to the panel,
to evaluate the endurance of their batteries. No specific equipment is required and can be manually performed
at any time or be scheduled up to two times per year. During the test, a LED indicator flashes on the luminaire
indicating the ongoing operation. For more information about the LED indicators of the luminaire, refer to its
manual.
Upon completion of the test, if a problem is detected by the luminaire, the panel will be notified, the
corresponding fault will appear in the fault list with detailed information.

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 5 of 15
[5]
2 INSTALLATION
2.1 Mounting the panel
WARNING
All installation operations must be done while the panel is disconnected from mains
power supply and batteries. Only trained personnel should carry out operations inside the
panel and only after taking all the precautionary measures.
Prior to installing/maintaining the panel, read the manual and have knowledge of the system’s capabilities,
functionality, and design to ensure proper operation.
Do not connect or disconnect system components while mains power supply or batteries are connected.
Prior to any operation inside the enclosure of the panel, ESD prevention measures should be taken.
The panel mounting area must be clean, dry, and free of collisions and vibrations. The panel must be
permanently installed on a fixed position in an indoor location. In (Figure 1) the interior mounting holes of the
panel are marked. Use all three mounting holes with the included wall mounting accessories of the package for
proper installation (plugs and screws).
The panel should be placed at least 1m above floor level, 1m bellow roof level and at a minimum distance of
30cm from other electronic devices. No other lines should cross the wall behind the panel except the panels
own power supply. The panel should be placed in a visible and accessible area to the building’s stuff, fire and
lighting safety personnel.
Figure 2 - Panel's interior

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 6 of 15
[6]
2.2 Power supply connection
The power supply cable must be a 3−core double insulated wire that meets the voltage and current requirements
of the panel. The ground terminal (marked with on the power management board) must be connected to the
installation’s ground (protective earth) to ensure proper and safe operation of the system.
Figure 3 - Power supply wiring and fuse
The interior of the control panel has space suitable for two 12V lead-acid batteries (Pb) with nominal capacity
of 7Ah, 9Ah, 12Ah or 15Ah. Both batteries must be the same model, type and have the same nominal capacity.
The two batteries must be connected in series. Three cables are provided to connect them, two of them are
pre-installed on the board’s battery terminals. The red wire must be connected to the positive terminal (+) of the
first battery. The black wire must be connected to the negative terminal (-) of the second battery. A jumper cable
is included in the accessories bag, to connect the two other terminals (negative terminal (-) of the first battery
to the positive terminal (+) of the second battery), as it is shown in the figure below:
Figure 4 - Battery wiring

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 7 of 15
[7]
2.3 Point wiring
Use a cable that meets the specifications below to connect the loop board with the points:
1. The installation cable must be suitable for data transfer.
2. LiYCY (TP) type cables are recommended, with cross section from 0.75mm2to 1.5mm2or
YSLYCY-JZ with cross section from 1mm2to 2.5mm2, depending on the number of
connected points, the topology of the installation and the length of the cable.
3. The communication cables must be placed 40cm away from any MAINS cable.
4. The communication cables must be placed 5m away from any motors or power station.
5. The cross section depends on the distance and the number of installed points. The
communication cable must contain 2 conductors, a shield and no additional unused
conductors
6. Select shielded cable for every installation.
7. The cable shield must be reconnected in every cut during the length of the loop and must be
terminated to the «PE» (Power Earth).
8. The positive and negative polarity must be maintained throughout the installation.
9. All points must be connected in parallel with the output.
10. Low resistance, less than 25 Ohm/km –the total impedance of each core of the cable should
not be more than 20 Ohm.
11. Wire cross section should be between 0,7mm2and 2,5mm2.
12. Low capacitance, less than 200 pF/m –the total capacitance of a single cable should not
exceed 400 nF.
Addressable Luminaire Connections
1. The GR-7500 can support up to 250 points per loop.
2. The maximum connected points to each cable must not exceed 75 for open loop and 150
for closed loop.
3. Each point must have unique non repeatable address.
4. No arithmetic address sequence is obligatory.12. Wire cross section should be between
0,7mm2and 2,5mm2.
WARNING
The maximum length of a single loop cable should not exceed 2000m. The maximum
connected points per cable are 150.
The upper and lower cable openings of the metallic enclosure of the panel can be used to drive
the cables through. The rubber plugs should not be removed from the openings, so the ingress
protection IP30 remains unchanged. Instead, pierce a hole on the rubber plug, big enough to barely
fit the cable and drive the cable through it. To connect one or more points to the loop output
terminals, remove the short-circuit adapter.
IMPORTANT
1. The cable’s shield must be reconnected in every cut along the length of the loop and
must be connected to the earth bar of the panel
2. The positive and negative polarity must be maintained along the length of the loop
3. All points must be connected in parallel with the output
4. If the number of installed points on a loop circuit exceeds 75, or if the length of its cable
exceeds 300m, then a closed loop connection topology is always recommended, to
minimize communication issues

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 8 of 15
[8]
The below figure describes the parallel connection of addressable points, which use a 2-way terminal, with the
loop board:
Notes:
•Max 250 points per loop device
•Max 150 points per line
Figure 5 - Closed loop topology
Table 1 - Recommended cable cross section
Loop cable length
200m
500m
1000m
1500m
2000m
Point Number
50
0.75 mm2
1 mm2
1 mm2
1.5 mm2
2.5 mm2
100
1 mm2
1 mm2
1.5 mm2
1.5 mm2
2.5 mm2
150
1.5 mm2
1.5 mm2
2.5 mm2
2.5 mm2
2.5 mm2
The below figure describes the parallel connection of addressable points, which use a 4-way
terminal, with the loop board:
Notes:
•Max 250 points per loop device
•Max 75 points per line
•Max 50m initial cable
•Max 300m cable per line
Figure 6 - Opened loop topology

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 9 of 15
[9]
2.4 Configure point address
A valid (1-250) and unique address (per loop) must be set for each point, using the onboard address selection
DIP switch on each point.
Certain models, such as ZLD-xx, GR-29X, do not have onboard DIP switches. In this case, the address must
be set using the panel by connecting and setting the luminaires one-by-one from the CHANGE POINT
ADDRESS menu.
For more information on the point’s address configuration, refer to the manual of the specific luminaire.
It is essential to draw a schematic of the installation. The schematic should include cable length, cable cross-
section, and the location of each point. It could be useful for the maintenance of the installation and an efficient
way to locate a faulty point or line problem.
Figure 7 - Example of an address selection DIP switch on a luminaire

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 10 of 15
[10]
2.5 Wiring verification
IMPORTANT
The following steps should be performed while the cables are NOT
connected to the loop board terminals.
Steps to verify the integrity of the installation’s wiring:
1. Verify the mains power supply to the panel and the connection of the protective earth (PE) to the board
terminals. The panel should be supplied by a separate line with its own circuit-breaker.
2. Using a multimeter measure the resistance between the protective earth (PE) terminal and the panel’s
earth bar. It should be less than 10 Ω.Higher values indicate bad panel grounding, and it is highly
dangerous and unsafe to operate it.
3. Optical inspection of each cable for possible wear/damage caused during the installation.
4. Optical inspection of each point connection for bad/wrong wiring.
5. If points are connected using a loop topology, using a multimeter measure the resistance between each
L+ and its corresponding LF+ line. It should be less than 60 Ω. Higher values indicate faulty
connections/cable and should be investigated and resolved.
6. If points are connected using a loop topology, repeat the previous step for loop cable, each L- and its
corresponding LF-line and each shield line start-finish.
7. If points are not connected using a loop topology (no return line), connect temporally the L-, L+ and its
shield, at the last point (end of line) together. Using a multimeter measure the resistance between the
start of L- and L+ line. It should be less than 60 Ω. Higher values indicate bad connections/faulty cable
and should be investigated.
8. If points are not connected using a loop topology, repeat the previous step for the L- or L+ line and its
shield. IMPORTANT: Remove the temporal connection at the end of the line between L-, L+ and its
shield.
9. Using a multimeter measure the resistance between each L+ and its corresponding L- line. It should be
more than 10 kΩ. Lower values indicate faulty connections/cable/short circuits and should be
investigated and resolved.
10. Using a multimeter measure the resistance between each L+ and its corresponding shield line. There
should be no circuit continuity (at least 10 MΩ). Lower values indicate faulty connections/cable/short
circuits and should be investigated and resolved.
11. Repeat the previous step between each L- and its corresponding shield line, each L+ and the protective
earth (PE) line and each L- and the protective earth (PE) line.
12. Every time a problem is detected and corrected on a line, all the check for this line should be repeated
from the start.

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 11 of 15
[11]
3 PANEL CONFIGURATION
3.1 Installation procedure
1•Mount the panel
2•Check each loop cable for correct polarity and open/short circuit.
3•Configure a valid and unique address for each point, on each loop.
4
•Draw a schematic of the installation. Include cable length, cable cross-section and the location of
each device.
5•Connect the mains power supply to the panel.
6•Connect the two 12V lead-acid batteries in series and to the panel.
7
•Configure the date and time of the panel.
(MAIN-> Technician -> Setting -> Time and date)
8
•Detect and register all connected points.
(MAIN -> Technician -> Setup -> Find all points)
9
•Compare the total number of detected luminaires for each loop with the schematic of the
installation.
10 •(Optional) Group points in zones.
11
•Configure the automatic function test procedure.
(MAIN -> Technician -> Test -> Set function test)
12
•Configure the automatic duration test procedure.
(MAIN -> Technician -> Test -> Set duration test)
13 •Let the panel operate uninterrupted for 30 minutes. Afterwards, check if there are any faults.
14
•If there are faults present, preform the required actions to resolve them.
(Refer to 3.2 Troubleshooting for more information.)

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 12 of 15
[12]
3.2 Troubleshooting
FAULT
SOURCE
CAUSE
ACTION
Disconnected
BATTERY
The batteries of the panel are not
connected or faulty.
• Check the batteries
connections.
• Replace batteries if problem
persists.
Overcharge
BATTERY
Faulty PMU (battery charger)
board.
• Replace the PMU board.
Undercharge
BATTERY
Faulty PMU (battery charger)
board.
• Replace the PMU board.
Ethernet/Wi-Fi
comm.
INTERNET CARD
1. Network card missing/not
connected.
2. Faulty network card.
• Check network card
connection and replace if
problem persists.
Loop voltage
(high)
LOOP
Faulty loop board or short circuit
on the loop’s cables.
•Replace with another loop
board.
Loop voltage
(low)
LOOP
Faulty loop board.
• Replace with another loop
board.
FAULT
NIC
Faulty NIC board.
• Replace with another NIC
board.
Datetime not set
PANEL
Date and time have not been set
to the panel.
• Set the date and time (DATE &
TIME MENU).
Non group
member
PANEL NETWORK
There is a panel connected to the
network, that is not part of the
“trusted” panels group.
• Remove the panel or perform a
new panel network group
formation (GROUP FORMATION
menu).
PNet open ring
PANEL NETWORK
Disconnect between 2 or more
panels of the panel network.
• Check the panel network
connections.
PNet disconnect
PANEL NETWORK
No communication with a
registered panel.
• Check if the disconnected
panel is still functional.
• Check the network cable
connections.
• Check if the panel network
settings have been altered.
Earth fault
PMU
1. USB cable connected.
2. Short circuit between PE and
loop cables.
3. Panel not properly connected
with PE line.
• Check the mains power supply
cable connections.
• Check the loop cable
connections.
No mains supply
PMU
No power supply from mains.
• Check the mains power supply
cables/connections.

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 13 of 15
[13]
Luminaire comm.
POINT
1. Luminaire has no power.
2. Luminaire has been removed.
3. EMI (electromagnetic
interference) on the
communication line
(Noise/Shortcircuit).
• Verify the operation of the
luminaire. Inspect for internal
faults and faulty loop wiring.
• Remove the luminaire from its
base and reconnect it after 5
seconds.
• Check for nearby sources of
EMI.
Battery capacity
POINT
The battery of the luminaire
cannot hold sufficient charge.
• Replace the luminaire’s battery
with one of the same type and
rating. (Refer to its user manual.)
Battery
POINT
1. Disconnected or missing
luminaire battery.
2. Luminaire’s battery is faulty.
• Check the battery connection.
• Replace the battery of the
luminaire.
Charger
POINT
Faulty luminaire charger circuit.
• Replace the luminaire.
Lamp
POINT
Faulty luminaire lamp.
• Check the lamp of the
luminaire and replace if needed.
Wrong model
POINT
1. Luminaire model has not been
correctly detected/registered.
2. Luminaire has been changed
with a different luminaire model.
• Manually configure the specific
luminaire to the correct model
(CONFIGURE POINTS menu).
Printer board
comm.
PRINTER
1. Thermal printer card
missing/not connected.
2. Faulty thermal printer card.
• Check the panel’s connection
with thethermal printer card and
replace if problem persists.
Printer queue
PRINTER
The printer’s buffer is full.
• Check if there is a problem that
doesn’t allow the printer to print
(no paper i.e.).
Printer busy
PRINTER
The printer’s buffer is full.
• Check if there is a problem that
doesn’t allow the printer to print
(no paper i.e.).
Over
temperature
PRINTER
There is a problem with the
printer’s head.
• Disconnect the printer from
the panel, let it cool off and try
again.
• If the fault persists, replace the
printer.
Printer paper
PRINTER
1. Thermal printer run out of
paper.
2. Problem with the thermal
printer’s paper roll.
• Check the thermal printer for a
paper jam.
• Replace the paper roll with a
new one.
Comm. conflict
LOOP
POINT
Detected points with the same
address on the same loop.
• Verify that the address of each
point connected to this loop is
unique.
• If duplicate addresses are
found, assign another to one of
them and register the point with
the new address.
Communication
error
INTERNET CARD
LOOP
NIC
PMU
POINT
The specific component/point
has compatibility issues with the
panel.
• Contact the manufacturer.

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 14 of 15
[14]
Disconnected
LOOP
NIC
PMU
POINT
PRINTER
The specific component/point
has been disconnected from the
panel.
• Check the connection between
the panel and the specific
component/point.
Open circuit
INPUT
OUTPUT
There is an open circuit detected
at the specific component.
• Check for open circuits on
specific component’s
wiring/connections.
Power supply
PRINTER
PMU
There is a problem with the
power supply.
• Check the power supply.
•Check the cable connections.
• If the problem persists, replace
the component.
Short circuit
INPUT
LOOP
OUTPUT
There is a short-circuit detected
at the specific component.
• Check for short-circuits on
specific component’s
wiring/connections.
Unregistered
LOOP
POINT
There is a point/loop connected
to the panel but is unregistered.
• Execute the automatic point
detection and registration (via
the FIND ALL POINTS menu).
• Manually register the point (via
the CONFIGURE POINTS menu).
• Manually register the loop (via
the LOOP CONFIGURATION
menu).

GR-750x series
Control panel for addressable
emergency luminaires
Document number:
923750400_90_001_EN
Date: 25/5/2023
Page: 15 of 15
[15]
Waste from Electrical and Electronic Equipment (WEEE) directive
This product must be disposed of in accordance with the WEEE directive. Electrical
and electronic equipment should not be mixed with general waste.
Declaration of Conformity
Olympia Electronics N. Lakasas - P. Arvanitidis S.A. hereby declares that this product
complies with the radio equipment directive 2014/53/EU (RED) and therefore has been
marked with the symbol . The full text of the Declaration of Conformity has been
issued and is available on the manufacturer’s website: www.olympia-electronics.com.