Smartgen HMAT880 User manual

HMAT880
MEDIUM VOLTAGE BYPASS ATS CONTROLLER
USER MANUAL

Chinese trademark
English trademark
SmartGen —make your generator smart
SmartGen Technology Co., Ltd.
No.28 Jinsuo Road, Zhengzhou, Henan Province, China
Tel: [phone]
[phone](overseas)
Fax: [phone]
Web: www.smartgen.com.cn/
www.smartgen.cn/
Email: [e-mail]
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of the copyright holder.
Applications for the copyright holder’s written permission to reproduce any part of this publication
should be addressed to SmartGen Technology at the address above.
Any reference to trademarked product names used within this publication is owned by their
respective companies.
SmartGen Technology reserves the right to change the contents of this document without prior notice.
Table 1 –Software Version
Date
Version
Content
2022-02-24
1.0
Original release.
2022-05-17
1.1
Modify the product model and related descriptions.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 3 of 66
Table 2 –Symbol Instruction
Symbol
Instruction
NOTE
Highlights an essential element of a procedure to ensure correctness.
CAUTION
Indicates a procedure or practice, which, if not strictly observed, could result in
damage or destruction of equipment.
WARNING
Indicates a procedure or practice, which could result in injury to personnel or loss of
life if not followed correctly.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 4 of 66
CONTENT
1 OVERVIEW .............................................................................................................................................. 6
2 PERFORMANCE AND CHARACTERISTICS ........................................................................................... 7
3 SPECIFICATION...................................................................................................................................... 9
4 MEASURE AND DISPLAY DATA .......................................................................................................... 11
5 OPERATION .......................................................................................................................................... 12
5.1 INDICATORS .................................................................................................................................. 12
5.2 KEY FUNCTION DESCRIPTION ..................................................................................................... 13
6 LCD DISPLAY........................................................................................................................................ 14
6.1 MAIN DISPLAY .............................................................................................................................. 14
6.2 STATUS DESCRIPTION ................................................................................................................. 15
6.3 MAIN MENU................................................................................................................................... 19
7 START/STOP OPERATION................................................................................................................... 20
7.1 MANUAL START/STOP................................................................................................................. 20
7.1.1 PANEL START/STOP.............................................................................................................. 20
7.1.2 REMOTE COMMUNICATION START/STOP.......................................................................... 20
7.2 AUTO START/STOP ...................................................................................................................... 21
7.2.1 START CONDITIONS .............................................................................................................. 21
7.2.1.1 INPUT START................................................................................................................... 21
7.2.1.2 GEN START MAINS NG ................................................................................................... 21
7.2.2 S1 GEN S2 GEN START/STOP............................................................................................... 21
7.2.3 SCHEDULED RUN ................................................................................................................... 22
7.2.4 SCHEDULED NOT RUN........................................................................................................... 23
8 PARAMETERS CONFIGURATION ........................................................................................................ 24
8.1 ILLUSTRATION .............................................................................................................................. 24
8.2 PARAMETERS CONFIGURATION ................................................................................................. 24
8.3 DIGITAL INPUT/OUTPUT FUNCTION DESCRIPTION .................................................................. 37
8.3.1 INPUT PORTS FUNCTION DESCRIPTION ............................................................................. 37
8.3.2 OUTPUT PORTS FUNCTION DESCRIPTION.......................................................................... 41
8.3.3 CUSTOM COMBINED OUTPUT .............................................................................................. 46
8.4 OVERCURRENT DMT AND IDMT SETTING.................................................................................. 46
9 EVENT LOG........................................................................................................................................... 47
10 BLACK BOX RECORDS ....................................................................................................................... 48
11 ATS OPERATION ................................................................................................................................ 49
11.1 MANUAL OPERATION................................................................................................................. 49
11.2 AUTO OPERATION ...................................................................................................................... 50
11.2.1 ILLUSTRATION ................................................................................................................. 50
11.2.2 AUTO TRANSFER AUTO RESTORE.................................................................................. 51
11.2.3 AUTO TRANSFER NON-RESTORE ................................................................................... 52
12 PT BREAK DETECTION ...................................................................................................................... 53
13 NEL CONTROL.................................................................................................................................... 54
13.1 ILLUSTRATION ............................................................................................................................ 54
13.2 AUTO OPERATION ...................................................................................................................... 54

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 5 of 66
13.3 MANUAL OPERATION................................................................................................................. 54
14 COMMUNICATION CONFIGURATION AND CONNECTION.............................................................. 55
14.1 ILLUSTRATION ............................................................................................................................ 55
14.2 RS485 COMMUNICATION .......................................................................................................... 55
14.3 EXPAND INPUT/OUTPUT MODULE COMMUNICATION DESCRIPTION .................................. 55
14.4 TERMINAL RESISTOR ................................................................................................................. 56
14.5 USB COMMUNICATION .............................................................................................................. 56
15 TERMINALS ........................................................................................................................................ 57
15.1 TERMINAL DESCRIPTION........................................................................................................... 57
15.2 CONTROLLER AC/DC SUPPLY DESCRIPTION .......................................................................... 60
15.2.1 POWER SUPPLY........................................................................................................................... 60
15.2.2 DC SUPPLY................................................................................................................................... 60
16 4-INCOMING 2-BUSTIE APPLICATION ............................................................................................. 61
16.1 SLD OF 4-INCOMING 2-BUSTIE SCHEME.................................................................................. 61
16.2 SYSTEM APPLICATION REQUIREMENTS.................................................................................. 61
16.3 CONTROLLER APPLICATION ..................................................................................................... 61
17 TYPICAL APPLICATION DIAGRAM ................................................................................................... 62
18 STEPWISE SWITCH SYSTEM APPLICATION DIAGRAM.................................................................. 63
19 INSTALLATION................................................................................................................................... 65
20 TROUBLESHOOTING.......................................................................................................................... 66

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 6 of 66
1OVERVIEW
HMAT880 Medium Voltage Bypass ATS Controller is a module that integrates programmable
function, automatic measurement, PT break detection, load stepwise switch, LCD display and digital
communication. It combines digital, intelligent and network technology, realizes automation of
measurement and control process, thus reducing manual operation error, which is an ideal product
for medium voltage bypass transfer.
HMAT880 Medium Voltage Bypass ATS Controller is composed of microprocessor as the core,
which can precisely detect 2-way 3-phase incoming voltage, make accurate judgment for voltage
abnormal situations (over/under voltage, over/under frequency, loss of phase, reverse phase
sequence) and output passive control coil. It fully considers various applications in bypass switch
and can be directly used for single bypass, dual bypass switch, also for manual/remote control switch.
With compact structure, advanced circuits, simple wiring and high reliability, it can be widely used in
electric device, server supply and debugging system of electric power, telecom, petrochemical
industry, mining, railways, municipal administration, data center, intelligent building and other
industries.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 7 of 66
2PERFORMANCE AND CHARACTERISTICS
——System type can set as: S1 Mains S2Mains, S1 Mains S2 Gen, S1 Gen S2 Mains, S1 Gen S2
Gen;
——4.3-inch single color 240x128 LCD display with white backlight, multilingual interface
(Simplified Chinese, English, other), push-button operation;
——Collect and display 2-way 3-phase voltage, frequency and phase;
——Collect and display load active power, reactive power, apparent power, power factor and
2-way current;
——Display main breaker position status (work position, test position, isolation position), bypass
breaker position status (work position, test position, isolation position);
——PT break detection function, whether PT wire is broken can be judged by measured voltage
and current data and PT break status can be obtained by digital input ports;
——Load stepwise switch function, can realize current unit and external stepwise switch control.
With current unit stepwise switch control, stepwise switch control of 24 load breakers can
be realized, the priority of each load breaker can be flexibly set, close feedback status, work
position status, test position status and trip status of each load breaker can be detected;
——Six 16-way digital input modules and three 16-way digital output modules can be expanded
via RS485 interface;
——Bustie control function, suitable for 4-incoming 2-bustie application scheme (realize by two
HMAT880 modules);
——Earth fault protection function;
——S1/S2 independent overcurrent warning or trip alarm function;
——Forced open, PT break, communication failure, earth fault alarm functions;
——NEL trip function;
——Display S1/S2 accumulated active energy, reactive energy;
——Display S1/S2 accumulated close times of main breaker and bypass breaker;
——Display current continuous supply time, last continuous supply time and S1/S2 accumulated
supply time;
——For energy storage breaker, it can close after PF (close is ready) signal is active;
——Over/under voltage, over/under frequency, overcurrent, loss of phase, reverse phase
sequence function;
——Auto/manual transfer, manually control breaker close/open in manual mode;
——All parameters can be configured on site. Passwords authentication ensures authorized
staff operation only;
——Manual commissioning to achieve genset start/stop operation;
——Breaker re-closing function of main/bypass breaker in auto mode;
——Suit for single bypass, dual bypass and mutual backup dual bypass breakers;

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 8 of 66
——Suit for manual/remote control bypass breaker;
——2-way N-wire isolated design;
——Real-time clock (RTC); event log function (event log can record 200 items circularly);
——With black box function, can record 5 events circularly, 60 detailed data of 50s before each
event record, and 10s after each event record;
——Scheduled routing run & scheduled not run (can be set as genset start once/weekly/monthly
whether with load or not);
——Can control two gensets to work as cycle run mode, master-slave run mode and balanced
time run mode;
——Wide DC power supply range allows the controller can bear instantaneous DC 80V input;
——Large AC wire terminal space, maximum AC 625V voltage input can be accepted;
——With Dual-RS485 isolated communication interface. With “four remote” (remote control,
remote measurement, remote communication, remote adjusting) function by the
ModBus-RTU communication protocol. Genset start/stop and breaker close/open can be
controlled remotely;
——Suitable for various AC systems (3-phase 4-wire, 3-phase 3-wire, single-phase 2-wire, and
2-phase 3-wire methods);
——Modular design, anti-flaming ABS plastic shell, pluggable terminal, embedded mounting,
compact structure with easy installation.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 9 of 66
3SPECIFICATION
Table 3 –Performance Parameters
Items
Contents
Working Voltage
1. B+, B- terminal: DC12V/24V/48V;
2. PA, PN terminal: AC(90~305)V or DC110V/DC220V;
Either or both.
Overall Consumption
<6W (Standby mode: ≤2W)
AC Voltage Input (PT or PT
secondary side not used)
AC system
3P4W (L-L)
(80~625)V
3P3W (L-L)
(80~625)V
1P2W (L-N)
(50~360)V
2P3W (L-L)
(80~625)V
Voltage Resolution: 1V
Accuracy: 1%
AC Frequency
Rated: 50/60Hz
Range: 15Hz~75Hz
Resolution: 0.1Hz
Accuracy: 0.1Hz
AC Current
Rated: 5A
Resolution: 0.1A
Accuracy: 1%
Aux. Output 1~4, 8, 10
16A AC250V Volts free output
Aux. Output 5~7, 9, 11~13
8A AC250V Volts free output
Digital Input 1~12
GND(B-) connected is active, low on threshold voltage ≤1.6VDC, max.
input voltage is 60VDC.
RS485 Interface
Isolated, half-duplex, 2400/4800/9600/19200bps baud rate can be set,
Modbus-RTU communication protocol, max. communication distance
can reach 1000m.
USB Interface
D-type USB interface
EMC Test Standard
Meet GB/T14048.11-2016 and IEC/EN 60947-6-1
Vibration
5Hz~8Hz: displacement=±7.5mm
8Hz~500Hz: a=±2g
IEC 60068-2-6
Shock
a=50g,
Pulse continuous time: 11ms,
Pulse waveform: half-sine, three consecutive shocks are applied in each
of the three mutually perpendicular directions, i.e. a total of 18 times.
IEC 60068-2-27
Bump
a=25g,
Pulse continuous time: 16ms,
Pulse waveform: half-sine,
IEC 60255-21-2

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 10 of 66
Items
Contents
Case Dimensions
260mmx180mmx54mm
Panel Cutout
242mmx161mm
Working Temperature
(-25~+70)°C
Working Humidity
(20~93)%RH
Storage Temperature
(-30~+80)°C
Protection Level
Front panel: IP65, when water proof rubber ring inserted between
controller and panel;
Back panel: IP20.
Insulation Strength
Apply AC1.5kV voltage between high voltage terminal and low voltage
terminal; The leakage current is not more than 3mA within 1min.
Weight
1.2kg

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 11 of 66
4MEASURE AND DISPLAY DATA
Table 4 –Display Parameters
No.
Measure & Display Data Items
1
S1/S2 Power Phase Voltage
2
S1/S2 Power Line Voltage
3
S1/S2 Power Voltage Phase
4
S1/S2 Power Frequency
5
Load 3-phase Current
6
Load 3-phase Active Power kW
7
Load Total Active Power kW
8
Load 3-phase Reactive Power kvar
9
Load Total Reactive Power kvar
10
Load 3-phase Apparent Power kVA
11
Load Total Apparent Power kVA
12
Load 3-phase Power Factor PF
13
Load Average Power Factor PF
14
Current Supply Time
15
Last Continuous Supply Time
16
S1 Accumulated Supply Time
17
S2 Accumulated Supply Time
18
S1 Accumulated Active Energy kWh
19
S2 Accumulated Active Energy kWh
20
S1 Accumulated Reactive Energy kvarh
21
S2 Accumulated Reactive Energy kvarh
22
MS1 Accumulated Close Times
23
MS2 Accumulated Close Times
24
B[S1 Accumulated Close Times
25
BPS2 Accumulated Close Times
26
Digital Input/Output Port Status
27
Real Time Clock
28
Event Log
29
Black Box Records
30
Communication Status
31
Alarm Information
32
Expand Input/Output Port Status

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 12 of 66
5OPERATION
5.1 INDICATORS
Fig.1 –Panel Indication Drawing
Table 5 –Indicators Description
Indicator Name
Description
Alarm
Slow flashing (1 time per sec) when warn alarm occurs; Fast flashing (5 times
per sec) when fault alarm occurs.
Manual
Light on when current mode is Manual mode.
Auto
Light on when current mode is Auto mode.
S1-PWR
Always illuminates when S1 power supply is normal, slowly flashes (1 time per
sec) when voltage is abnormal, extinguishes when there is no voltage.
S2-PWR
Always illuminates when S2 power supply is normal, slowly flashes (1 time per
sec) when voltage is abnormal, extinguishes when there is no voltage.
Main
Always illuminates when main breaker is in unlock status.
Bypass
Always illuminates when bypass breaker is in unlock status.
Main S1
Always illuminates: Main S1 closes, S1 supplies power for load.
Main Open
Always illuminates: Main breaker opens.
Main S2
Always illuminates: Main S2 closes, S2 supplies power for load.
Bypass S1
Always illuminates: Bypass S1 closes, S1 supplies power for load.
Bypass Open
Always illuminates: Bypass breaker opens.
Bypass S2
Always illuminates: Bypass S2 closes, S2 supplies power for load.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 13 of 66
5.2 KEY FUNCTION DESCRIPTION
Table 6 –Key Function Description
Icon
Key
Function Description
Main S1 Close
Active when bypass is locked (main is unlocked) in manual mode;
After pressing it, if main S1 has been opened, then main S1 will close.
Main Open
Active when bypass is locked (main is unlocked) in manual mode;
After pressing it, main breaker will open.
Main S2 Close
Active when bypass is locked (main is unlocked) in manual mode;
After pressing it, if main S2 has been opened, then main S2 will close.
Bypass S1 Close
Active when main is locked (bypass is unlocked) in manual mode;
After pressing it, if bypass S1 has been opened, then bypass S1 will
close.
Bypass Open
Active when main is locked (bypass is unlocked) in manual mode;
After pressing it, bypass breaker will open.
Bypass S2 Close
Active when main is locked (bypass is unlocked) in manual mode;
After pressing it, if bypass S2 has been opened, then bypass S2 will
close.
Man/Auto
Press it to switch manual and auto mode.
Main/Bypass
Press it to switch main and bypass unlock status.
Return/Homepage
When setting parameters, it is return key, press it can return previous
menu;
In main interface, press this key to return to homepage; in other
interfaces, press this key to return to homepage.
Set/Confirm
In main interface, press this key to enter menu;
In menu interface, press this key can move cursor and confirm setting
information.
Up/Alarm Mute
In main interface, press this key to scroll up screen;
In menu interface, press this key to up cursor or increase value in setting
menu;
Long press this key for muting alarm in main interface.
Down/Lamp Test
In main interface, press this key to scroll down screen;
In menu interface, press this key to down cursor or decrease value in
setting menu;
In main interface, long press this key for testing lamps, LCD backlight
illuminates, LCD displays all black, all LEDs illuminate in this mode.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 14 of 66
6LCD DISPLAY
6.1 MAIN DISPLAY
Table 6 –Interface Display
Items
Display Contents
Homepage
S1 status, S2 status, breaker status;
Supply system diagram;
S1/S2 voltage and frequency;
S1/S2 master set;
Genset status
Breaker position information;
Auto trans./restore status.
S1 Power
S2 Power
S1 line voltage, phase voltage, phase angle, frequency;
S2 line voltage, phase voltage, phase angle, frequency.
Load
Load 3-phase current A (I1, I2, I3);
Load 3-phase reactive power kW (P1, P2, P3);
Load 3-phase reactive power kvar (Q1, Q2, Q3);
Load 3-phase apparent power kVA (S1, S2, S3);
Load total active power kW (sum of P1, P2, P3);
Load total reactive power kvar (sum of Q1, Q2, Q3);
Load total apparent power kVA (sum of S1, S2, S3);
Earth current In (display after earth fault detection is enabled);
Load 3-phase power factor PF (PF1, PF2, PF3);
Load average power factor PF (average value of PF1, PF2, PF3).
S1 Accum.
S2 Accum.
S1 accumulated active energy;
S1 accumulated reactive energy;
MS1 close times;
BPS1 close times;
S2 accumulated active energy;
S2 accumulated reactive energy;
MS2 close times;
BPS2 close times.
Supply Time
S1 accumulated supply time;
S2 accumulated supply time;
Current supply time;
Last continuous supply time.
I/O Coil
Digital input ports status;
Digital output ports status;
QTIE close/open status.
Comm.
RS485 communication address;
RS485-1 comm. status and baud rate;
RS485-2 comm. status and baud rate;
USB communication status.
Alarms
Current alarm information (warn alarm and fault alarm).

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 15 of 66
Items
Display Contents
Expand
Input/Output
Ports Status
Expand 16-way digital input status of DIN16A-2 module 1-6;
Expand 16-way digital output status of DOUT16B-2 module 1-3.
Status
Alarm status/working status;
Real-time clock;
Status line is showed below in every main screen pages.
6.2 STATUS DESCRIPTION
Table 8 –S1 Voltage Status
No.
Item
Description
1
S1 Available
S1 Normal Delay.
2
S1 Unavailable
S1 Abnormal Delay.
3
S1 Volt. Normal
Power supply voltage is within the setting range.
4
S1 Blackout
Voltage is 0.
5
S1 Over Volt.
Voltage is higher than the set value.
6
S1 Under Volt.
Voltage is lower than the set value.
7
S1 Over Freq.
Frequency is higher than the set value.
8
S1 Under Freq.
Frequency is lower than the set value.
9
S1 Loss of Phase
Loss of 1-phase or 2-phase of A, B and C.
10
S1 Reverse Phase Seq.
A-B-C phase sequence is wrong.
Table 9 –S2 Voltage Status
No.
Item
Description
1
S2 Available
S2 Normal Delay.
2
S2 Unavailable
S2 Abnormal Delay.
3
S2 Volt. Normal
Power supply voltage is within the setting range.
4
S2 Blackout
Voltage is 0.
5
S2 Over Volt.
Voltage is higher than the set value.
6
S2 Under Volt.
Voltage is lower than the set value.
7
S2 Over Freq.
Frequency is higher than the set value.
8
S2 Under Freq.
Frequency is lower than the set value.
9
S2 Loss of Phase
Loss of 1-phase or 2-phase of A, B and C.
10
S2 Reverse Phase Seq.
A-B-C phase sequence is wrong.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 16 of 66
Table 10 –Genset Status
No.
Item
Description
1
Start Delay
Delay time before genset start.
2
Stop Delay
Delay time before genset stop.
3
Scheduled Not Run
When scheduled not run is active, its duration time will be displayed.
4
Scheduled Run
When scheduled run is active, its duration time will be displayed.
5
S1 Cycle Run
S1 cycle run countdown will begin when cycle start is active.
6
S2 Cycle Run
S2 cycle run countdown will begin when cycle start is active.
7
S1 Genset Working
Active only when system has 2 gensets and S1 is generating.
8
S2 Genset Working
Active only when system has 2 gensets and S2 is generating.
9
Genset Working
Genset start signal output.
10
Genset Standby
There is no genset start signal output.
Table 11 –ATS Status
No.
Item
Description
1
Ready to Transfer
ATS transfer begins.
2
MS1 Closing
MS1 closing delay is in progress.
3
MS1 Opening
MS1 opening delay is in progress.
4
MS2 Closing
MS1 closing delay is in progress.
5
MS2 Opening
MS2 opening delay is in progress.
6
Transfer Rest
Transfer rest time.
7
Closing MS1 Again
If “Closing Again Delay” is not 0, when the MS1 “Fails to Open”
condition occurs, it’s the again close time.
8
Opening MS1 Again
If “Opening Again Delay” is not 0, when the MS1 “Fails to Close”
condition occurs, it’s the again open time.
9
Closing MS2 Again
If “Closing Again Delay” is not 0, when the MS2 “Fails to Open”
condition occurs, it’s the again close time.
10
Opening MS2 Again
If “Opening Again Delay” is not 0, when the MS2 “Fails to Close”
condition occurs, it’s the again open time.
11
Wait MS1 PF Input
MS1 ready PF input is active before MS1 closing.
12
Wait MS2 PF Input
MS2 ready PF input is active before MS2 closing.
13
Elevator Delay
Delay time before ATS transfer, elevator control outputs.
14
MS1 On-load
MS1 was already closed and S1 is taking load.
15
MS2 On-load
MS2 was already closed and S1 is taking load.
16
Off-load
Breaker is opened, load is disconnected.
17
BPS1 Closing
BPS1 is closing delay.
18
BPS1 Opening
BPS1 is opening delay.
19
BPS2 Closing
BPS2 is closing delay.
20
BPS2 Opening
BPS2 is opening delay.
21
BPS1 On-load
BPS1 was already closed and S1 is taking load.
22
BPS2 On-load
BPS2 was already closed and S1 is taking load.
23
S1 Parallel On-load
Main and bypass breakers take load and supply power in parallel.
24
S2 Parallel On-load
Main and bypass breakers take load and supply power in parallel.
25
QTIE Closing
After QTIE control is enabled, QTIE is closing delay.
26
QTIE Opening
After QTIE control is enabled, QTIE is opening delay.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 17 of 66
No.
Item
Description
27
S1 Load Stepwise
Close
After load stepwise switch is enabled, S1 load is closing is noted in
S1 load stepwise closing process.
28
S1 Load Stepwise
Open
After load stepwise switch is enabled, S1 load is opening is noted in
S1 load stepwise opening process.
29
S2 Load Stepwise
Close
After load stepwise switch is enabled, S2 load is closing is noted in
S2 load stepwise closing process.
30
S2 Load Stepwise
Open
After load stepwise switch is enabled, S2 load is opening is noted in
S2 load stepwise opening process.
Warning alarms are active when controller detects the alarm signals, and alarm indicator will
flash slowly (1 time per sec). When alarm is reset, indicator is extinguished, which means warning
alarms are not latched.
Table 12 –Warning Alarms
No.
Item
Description
1
S1 Load Overcurrent
When overcurrent action is set as warning, S1 takes load, current is
greater than the set value.
2
S2 Load Overcurrent
When overcurrent action is set as warning, S2 takes load, current is
greater than the set value.
3
Forced Open
Forced open (non-fire cutoff) action is set as warning, when this
input is active, forced open warning alarm occurs.
4
Same Side Power
Parallel
Alarm is initiated when main and bypass breakers parallel on the
same side.
5
S1 PT Break
Alarm is initiated when PT secondary circuit is broken.
6
S2 PT Break
Alarm is initiated when PT secondary circuit is broken.
7
Input 1-6 Comm.
Failure
Alarm is initiated when expand input module 1-6 communication
fails and alarm action is set as warning,
8
Output 1-3 Comm.
Failure
Alarm is initiated when expand output module 1-3 communication
fails and alarm action is set as warning,
9
Load Switching
Failure
In load stepwise switching process, close or open failure alarm
occurs and switching failure action is set as warning.
10
Earth Fault
When earth current detection is enabled and the current is greater
than the set value, warning alarm will be initiated when the action is
selected.
Fault alarms are active when controller detects the alarm signals. Alarm indicator will flash
rapidly (5 times per sec) and the alarm will last until it was removed manually. Fault alarms are
latched.
Table 13 –Fault Alarms
No.
Item
Description
1
S1 Close Failure
S1 fails to close.
2
S1 Open Failure
S1 fails to open.
3
S2 Close Failure
S2 fails to close.
4
S2 Open Failure
S2 fails to open.
5
S1 Load Overcurrent
Overcurrent action is set as trip, the current value is greater than the

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 18 of 66
No.
Item
Description
Trip
set value when S1 takes load.
6
S2 Load Overcurrent
Trip
Overcurrent action is set as trip, the current value is greater than the
set value when S2 takes load.
7
Forced Open
Forced open (non-fire cutoff) action is set as fault, when this input is
active, forced open fault alarm occurs.
8
S1 Genset Fault
Only when system has 2 gensets and S1 is generating, S1 fails to
start.
9
S2 Genset Fault
Only when system has 2 gensets and S2 is generating, S2 fails to
start.
10
S1 Breaker Trip Alarm
This input is active.
11
S1 Breaker Trip Alarm
This input is active.
12
Input 1-6 Comm.
Failure Fault
Fault alarm will be initiated when expand input port 1-6
communication fails and alarm action is set as fault.
13
Output 1-3 Comm.
Failure Fault
Fault alarm will be initiated when expand output port 1-3
communication fails and alarm action is set as fault.
14
Load Switching
Failure
In load stepwise switching process, close or open failure alarm
occurs and switching failure action is set as fault.
15
Earth Fault
When earth current detection is enabled and the current is greater
than the set value, fault alarm will be initiated when the action is
selected.
16
QTIE Close Failure
In auto mode, if QTIE close signal can’t be detected after close
output delay, QTIE close failure alarm will be initiated.
17
QTIE Open Failure
In auto mode, if there is still a close signal after open output delay,
QTIE open failure alarm will be initiated.
18
QTIE Breaker Trip
This input is active.
19
Load Breaker Trip
This input is active.
The prompt information will disappear after displaying for 2s when it is active.
Table 14 –Prompt Information
No.
Item
Description
1
Please Reset the
Alarm
When there is fault alarm occurs and alarm is not removed, the
indication will be displayed when manually transfers to Auto Mode.
2
S1 Closed
The prompt information after pressing “S1 Close”key when S1
closed.
3
S2 Closed
The prompt information after pressing “S2 Close”key when S2
closed.
4
Panel Locked
The prompt information when panel lock is active and keys are
pressed (except for Up, Down, Confirm, Return keys).
5
QTIE Closed
The prompt information after pressing “S1 Close” or “S2 Close” key
when QTIE is closed.
6
Stepwise Switching
The prompt information after pressing “S1 Close” or “S2 Close” key
when load breaker is stepwise switching.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 19 of 66
Table 15 –Other Status Information
No.
Item
Description
1
Start Inhibit
Genset start Inhibit is active.
2
Remote Control
Inhibit
Remote control inhibit is active.
3
S1 Load Inhibit
S1 Load Inhibit input is active.
4
S2 Load Inhibit
S2 Load Inhibit input is active.
5
NEL1 Trip
NEL1 offload output.
6
NEL2 Trip
NEL2 offload output.
7
NEL3 Trip
NEL3 offload output.
8
Remote Start On-load
Remote start (on load) input is active.
9
Remote Start Off-load
Remote start (off load) input is active.
10
Gen Start Mains NG
Start genset when mains is abnormal.
11
Cycle Run Mode
Active when S1 and S2 are both generating.
12
Balanced Run Mode
Active when S1 and S2 are both generating.
13
Master-Slave Run
Mode
Active when S1 and S2 are both generating.
14
Auto Mode
Current mode is Auto mode.
15
Manual Mode
Current mode is Manual mode.
16
QTIE Close Inhibit
QTIE close inhibit is active.
6.3 MAIN MENU
In main interface, press key will enter into the main menu interface.
1. Parameter Configuration
2. Data Calibration
3. Event Log
4. Black Box Records
5. Auto Trans. Auto Restore
6. Manual Start/Stop
7. Language
8. About
Press Up/Down key to choose parameter line (the current line was
highlighted with black) and then press Confirm key to enter into the
corresponding display screen.
NOTE1: Default password is 01234, user can change it in case of others change the parameters setting. Please
clearly remember the password after changing. If you forget it, please contact SmartGen services.
NOTE2: Data calibration is for factory use only and correct passwords must be input before entered.

HMAT880 Medium Voltage Bypass ATS Controller User Manual Page 20 of 66
7START/STOP OPERATION
7.1 MANUAL START/STOP
7.1.1 PANEL START/STOP
In the main screen, press “Set”key, it will enter menu interface, then select “Manual Start/Stop”
and press “Confirm” key, then it will enter corresponding interface.
Manual Genset Test
Press “Up/Down” key to choose parameter line (the current line was
highlighted with black) and then press “Confirm” key to confirm.
0. Return
1. Genset Stop
2. Genset Start
Genset Stop: Disconnect the start signal, i.e. stop the running genset.
Genset Start: Output the start signal, i.e. start the genset.
When system type is “S1 Gen S2 Gen”, manual start/stop menu interface is as follows:
Manual Genset Test
Press “Up/Down” key to choose parameter line (the current line was
highlighted with black) and then press “Confirm” key to confirm.
0. Return
1. S1 Genset Stop
2. S1 Genset Start
3. S2 Genset Stop
4. S2 Genset Start
S1 Genset Stop: Disconnect the S1 start signal, i.e. stop the running S1 genset.
S1 Genset Start: Output the S1 start signal, i.e. start the S1 genset.
S2 Genset Stop: Disconnect the S2 start signal, i.e. stop the running S2 genset.
S2 Genset Start: Output the S2 start signal, i.e. start the S2 genset.
7.1.2 REMOTE COMMUNICATION START/STOP
Send remote start/stop signals using MODBUS protocol via RS485 port.
Remote Communication Stop: Disconnect the start signal, i.e. stop the running genset.
Remote Communication Start: Output the start signal, i.e. start the genset.