GÜDE Expert Power Control 8291 User manual

Manual
© 2020 GUDE Systems GmbH
Manual Ver. 1.0.1
from Firmware Ver. 1.0
Expert Power Control 8291

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Expert Power Control 8291 © 2020 GUDE Systems GmbH

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Table of contents
1. Device Description 5
1.1 Security Advice .............................................................................................................. 6
1.2 Content of Delivery ........................................................................................................ 6
1.3 Description ..................................................................................................................... 6
1.4 Installation ...................................................................................................................... 7
1.5 Structure EPC 8291 ........................................................................................................ 9
1.6 Technical Specifications .............................................................................................. 12
1.6.1 Electrical Measurement ......................................................................................... 12
1.7 Sensor ........................................................................................................................... 13
2. Operating 16
2.1 Operating the device directly ..................................................................................... 17
2.2 Control Panel ................................................................................................................ 17
2.3 Maintenance ................................................................................................................ 19
2.3.1 Maintenance Page ................................................................................................. 21
2.3.2 Configuration Management ................................................................................... 22
2.3.3 Bootloader Activation ............................................................................................. 23
3. Configuration 26
3.1 Power Ports .................................................................................................................. 27
3.1.1 Watchdog ............................................................................................................... 28
3.2 Ethernet ........................................................................................................................ 30
3.2.1 IP Address ............................................................................................................... 30
3.2.2 IP ACL ..................................................................................................................... 31
3.2.3 HTTP ....................................................................................................................... 32
3.3 Protocols ....................................................................................................................... 34
3.3.1 Console ................................................................................................................... 34
3.3.2 Syslog ..................................................................................................................... 36
3.3.3 SNMP ...................................................................................................................... 36
3.3.4 Radius ..................................................................................................................... 38
3.3.5 Modbus TCP ........................................................................................................... 39
3.4 Clock .............................................................................................................................. 40
3.4.1 NTP ......................................................................................................................... 40
3.4.2 Timer ...................................................................................................................... 41
3.4.3 Timer Configuration ............................................................................................... 41
3.5 Sensors .......................................................................................................................... 47
3.5.1 Port Switching ......................................................................................................... 49
3.6 E-Mail ............................................................................................................................ 50
3.7 Front Panel ................................................................................................................... 51
3.8 Fan ................................................................................................................................. 51

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Table of contents
4. Specifications 52
4.1 IP ACL ............................................................................................................................ 53
4.2 IPv6 ................................................................................................................................ 53
4.3 Radius ............................................................................................................................ 54
4.4 Automated Access ....................................................................................................... 54
4.5 SNMP ............................................................................................................................ 55
4.5.1 Device MIB 8291 .................................................................................................... 58
4.6 SSL ................................................................................................................................. 60
4.7 Console .......................................................................................................................... 62
4.7.1 SSH .......................................................................................................................... 66
4.7.2 Push Messages ...................................................................................................... 67
4.7.3 Console Cmd 8291 ................................................................................................. 67
4.7.4 Serial Console ......................................................................................................... 78
4.8 Modbus TCP .................................................................................................................. 78
4.9 Messages ....................................................................................................................... 84
5. Support 85
5.1 Data Security ................................................................................................................ 86
5.2 Contact .......................................................................................................................... 86
5.3 Declaration of Conformity .......................................................................................... 88
5.4 FAQ ................................................................................................................................ 88
89
Index

Device Description

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
1 Device Description
1.1 Security Advice
·The device must be installed only by qualified personnel according to the following in-
stallation and operating instructions. The manufacturer does not accept responsibility
in case of improper use of the device and particularly any use of equipment that may
cause personal injury or material damage.
·The device contains no user-maintainable parts. All maintenance has to be performed
by factory trained service personnel.
·This device contains potentially hazardous voltages and should not be opened or dis-
assembled.
·The device can be connected only to 100 - 240 V AC (50 - 60 Hz) power supply sock-
ets.
·The used power cords, plugs and sockets have to be in good condition. Always con-
nect the device to properly grounded power sockets.
·To disconnect the appliance quickly and safely from the power supply, the outlet sup-
plying the appliance with power must be easily accessible.
·This equipment is designed for indoor use only. It must not be used in condensing or
excessively hot environments.
·Please also observe the other instructions in the instructions for proper handling of the
device.
·Because of safety and approval issues it is not allowed to modify the device without
our permission.
·The device is NOT a toy. It has to be used or stored out of range of children.
·Care about packaging material. Plastics has to be stored out of range of children.
Please recycle the packaging materials.
·In case of further questions, about installation, operation or usage of the device, which
are not clear after reading the manual, please do not hesitate to ask our support team.
·Please, never leave connected equipment unattended, that can cause damage.
·Only connect electrical devices that do not have a limited duty cycle. This means that
in the event of a fault, all connected electrical devices must be able to withstand con-
tinuous activation without causing damage.
1.2 Content of Delivery
The package includes:
·Expert Power Control 8291
·1 x Power Supply cable (IEC C19, max. 16 A)
·Quick Start Guide
1.3 Description
The Expert Power Control 8291-1 has 17 DC switchable power outlets with voltages of
24 V, 12 V and 5 V and 4 AC (IEC C13, max. 10A) switchable power outlets

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
·21 Power Ports individually switchable directly on the device, via HTTP(S) (TLS 1.2 +
1.3), SNMP (v1, v2c and v3), Modbus TCP
·Command line tool via Telnet, SSH and RS232 serial interface
·Control and configuration with CGI parameters and JSON messages via HTTP (REST
API)
·Integrated failure-proof power supply unit (max. 300 W)
·Power monitoring of 5 V, 12 V and 24 V (Bank A-D)
·Maximum available DC current per port: max. 4 A
·Current segmentation per bank: 5 V: max. 8,8 A, 12 V: max. 6 A, 24 V: max. 12,5 A
·Switching through programmable sensor thresholds
·Scheduled and event-based switching
·Self-healing feature: An individual watchdog (ICMP/TCP) for each Power Port automat-
ically reboots in case of lock-up
·Generation of messages (E-Mail, Syslog and SNMP traps) and relay switching de-
pending on the energy measurement limits, resp. external sensors
·Dual TCP/IP Stack with IPv4 and IPv6 support
·AC: Metering of energy, current, power factor, phase angle, frequency, voltage and
active / apparent / reactive power
·AC: Residual current metering type A
·A clearly visible LED display for port status, total current,
·Integrated overvoltage protection (SPD) type 3
·Each outlet protected by eFuses in case of short circuits
·2 interfaces for optional sensors for environmental monitoring (temperature, humidity
and air pressure)
·RJ45 network connection and RS232 interface
·IPv6, SNMPv3, Telnet, Radius, ModbusTCP
·HTTP/HTTPS, e-mail (SSL, STARTTLS), DHCP, Syslog
·Access control via IP Access Control List
·Low internal power consumption
·Developed and manufactured in Germany
1.4 Installation
Anzeige pro Bank
1. LED indicators (5V, 12V, 24V, 230V) for bank voltage display
2. LED indicator (flash) for Over Voltage Protection (green - surge protection is active,
red - inactive)
3. 21 plain text displays (on/off) for the state of the outputs (Bank A to Bank E)
4. 2 x 7-segment display for measured values
5. Status LED

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
6. Select button
7. Ok button
8. Ethernet connector (RJ45)
9. 2 x External sensor connectors (RJ45)
10. RS232 connector
11. Mains supply (IEC C20, max.16A)
12. 4 x Load outputs Bank E (IEC C13, max. 16A)
13. 4 x Industrial terminal 2-pole (Bank D)
14. 4 x Industrial terminal 2-pole (Bank C)
15. 4 x Industrial terminal 2-pole (Bank B)
16. 5 x Industrial terminal 2-pole (Bank A)
17. 5 x USB socket Type A (Bank A)
18. 3 x LED indicators 12V / 24V selected
The USB ports are for power supply only, no data communication takes place.
Start-up the device
·Connect the power cord (IEC C19, max. 16A) to the mains supply. The cable connect-
ors are secured as regards their type against unintentional loosening. They must be
inserted up to the stop, otherwise there is no secure connection. The plug must not
wobble in the socket, or there is no tight connection.
·Plug the network cable into the Ethernet socket (RJ45).
·If required, setup a serial connection to the RS232 port.
·Insert the optional external sensors into the sensor connectors.
·Connect the consumers with the load outputs (IEC C13, max. 10A).

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
·Connect the consumers with the Industrial terminal or USB sockets.
1.5 Structure EPC 8291
The Expert Power Control 8291-1 has 17 x DC switchable outputs with voltages of
12V, 24V and 5V as well as 4 x AC switchable 230V outputs. The outputs are divided
into 5 different banks:
·Bank A with 5V (max. 8.8 A)
·Bank B with 12V (max. 6.0 A) or 24V (max. 12.5 A)
·Bank C with 12V (max. 6.0 A) or 24V (max. 12.5 A)
·Bank D with 12V (max. 6.0 A) or 24V (max. 12.5 A)
·Bank E with 230V (max. 10 A)
The voltage selection (12V or 24V) of the banks B to D is indicated by LEDs on the front
panel and on the back.
Voltage sources in the EPC 8291-1
The 230V mains voltage feeds the built-in 24V power supply unit (300 W) of the device.
On the web page (Control Panel) the measurements of the DC voltage sources S1 to S5
are displayed. Here corresponds:
·S1 - 5V DC (max. 8.8 A) for Bank A fed from 24V
·S2 - 12V DC (max. 6.0 A) for bank B fed from 24V
·S3 - 12V DC (max. 6.0 A) for Bank C fed from 24V
·S4 - 12V DC (max. 6.0 A) for Bank D powered from 24V
·S5 - 24V DC (max. 12.5 A) fed from 230V mains voltage

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
In this example you can see that the voltage source S1 (bank A) is fed by the source S5
(24V power supply). The consumption at S1 is also reflected at S5.
Measuring points of the voltage sources
The device has a current and voltage measurement at the following locations in the
device:
·Bank A 5V DC (Bank monitor) display on the website Bank A
·Bank B 12V / 24V DC (Bank monitor) Display on the website Bank B
·Bank C 12V / 24V DC (Bank monitor) Display on the website Bank C
·Bank D 12V / 24V DC (Bank monitor) Display on the website Bank D
·24V power supply (Supply monitor) Display on the website as "S5"
·230V power supply (Energy monitor & RCM type A) on the website as "L1 Meter12
Critical voltage and current values
If the voltage measurement falls below minimum values, the voltage indicator LED on the
front panel changes from green to red. If the current of a bank or 24V power supply ex-
ceeds a critical value, the voltage indicator LED flashes.
Error case
5V
12V
24V
230V
Voltage undershot (red
LED)
< 4,75V
< 11,4V
< 22,8V
< 80V
Current exceeded (flashing
LED)
> 8,8 A
> 6,0 A
> 12,5 A
> 16 A
Here the voltage at bank D has fallen below 11.4V.
Use of eFuses
In the device, the DC power sources are protected by resettable electronic fuses
(eFuses). These fuses are triggered by short circuit or overload. If an eFuse is triggered,
the output is switched off. The device then also automatically switches off the port (front

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
LEDs go from "on" to "off"). When the port is turned on again, the eFuse is reset and the
output will operate normally until another short circuit or overload occurs. Triggering of an
eFuse is indicated on the front panel LEDs by a flashing green triangle above a port
number. The following states exist for an eFuse:
State
Number
Web Icon
Frontpanel LED
switched off (Ok)
0
switched on (Ok)
1
eFuse triggered (Error 1)
2
flashing triangle
External voltage source (Er-
ror 2)
3
flashing triangle
The numbers (0 - 3) of eFuses are returned by console commands, SNMP and Modbus
TCP as eFuse state description.
Operating external voltage sources at the outputs of the EPC 8291-1 can cause
damage to the device.
In this example an overload has occurred on port 2 of bank A.
Overvoltage Protection
The device has a type 3 overvoltage protection. The status of which is indicated by a
green and a red flash on the front panel. A green flash indicates that the protection is op-
erational, a red flash indicates that the overvoltage protection is out of order. In addition,
the status of the surge protection cant be determined via data communication with the
device. Each surge protector is designed to discharge a virtually unlimited number of
surge pulses in normal installation environments. In an environment with many high-en-
ergy surge pulses, aging of the surge protection element can lead to a permanent failure
of the function.
The surge protection function can only be restored by the manufacturer of the
device. Normally, the device will continue to operate even after the failure of the protect-
ive function.
Signalling via e-mail, syslog or SNMP trap is only done once during operation, ex-
actly at the moment when the protection fails. In addition, a message is generated when
the device is switched on if the surge protection is not operational.

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
1.6 Technical Specifications
Interfaces
1 x Ethernet port (RJ45)
1 x Serial connector (D-SUB, RS232)
1 x Mains supply (IEC C20, max.16 A)
5 x USB socket Type A (5V, max. 3.5 A)
5 x DC outputs (5V, max. 3,5 A)
12 x DC outputs (12V / 24V, max. 4 A)
4 x Load outputs (IEC C13, max. 16 A)
2 x RJ45 for external sensor
Network connectivity
10/100 MBit/s Ethernet RJ45
Protocols
TCP/IP, HTTP/HTTPS, SNMP v1/v2c/v3,
SNMP traps,
Syslog, E-Mail (SMTP), Telnet, SSH,
Modbus TCP
Power Supply
internal power supply (240V AC / -15% /
+10%)
Overvoltage Protection
Type 3
Environment
·Operating temperature
·Storage temperature
·Humidity
0°C - 50 °C
-20°C - 70 °C
0% - 95% (non-condensing)
Case
powder coated, galvanized steel sheet
Measurements
19" (inches), 1 Rack Unit, (Depth 240
mm)
Weight
approx. 4.4 kg
Plug for DC switching outputs
Industrial terminal 2-pole - AK1550/2-3.5-
GREEN
1.6.1 Electrical Measurement
typical fault tolerances for Ta=25°C, I=1Arms...16Arms, Un=90Vrms...265Vrms

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
Electrical Measurement Specification DC
Category
Range
Unit
Resolu-
tion
Inaccuracy
(typical)
Voltage
90-265
V
0.01
< 1%
Current
0 - 16
A
0.001
< 1.5%
Frequency
45-65
Hz
0.01
< 0.03%
Phase
-180 - +180
°
0.1
< 1%
Active power
0 - 4000
W
1
< 1.5%
Reactive power
0 - 4000
Var
1
< 1.5%
Apparent power
0 - 4000
VA
1
< 1.5%
Power factor
0 - 1
-
0.01
< 3%
Energy Counter
Active Energy
(total)
9.999.999,999
kWh
0.001
< 1.5%
Active Energy
(temporary)
9.999.999,999
kWh
0.001
< 1.5%
Measurement accuracy DC
Voltage internal
sources S1...S5
better ± 3% of measured value ± 0.1V
Current Bank A...D + S5
(pure resistive loads)
better ± 3% of measured value ± 0.1A
1.7 Sensor
Two external sensors can be connected to the Expert Power Control 8291-1. The fol-
lowing sensors are currently available

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
Humidity/Temperature Sensor 7102 (End-of-Life)
Cable length
Connector
RJ45
temperature range
-20°C to +80°C, ±0,5°C (maximum) and ±0,3°C (typical)
air humidity range
(non-condensing))
0-100%, ±3% (maximum) and ±2% (typical)
Product Name
7101
7104-1
7105-1
7106-1
Calibrated
Sensor
-
7104-2
7105-2
7106-2
Cable length
Connector
RJ45
RJ45
RJ45
RJ45
temperature range
-20°C to +80°C at
±2°C (maximum)
and ±1°C (typical)
-20°C to +80°C at
±2°C (maximum)
and ±1°C (typical)
-20°C to +80°C at
±2°C (maximum)
and ±1°C (typical)
-20°C to +80°C at
±2°C (maximum)
and ±1°C (typical)
air humidity range
(non-condensing)
-
-
0-100%, ±3%
(maximum) and
±2% (typical)
0-100%, ±3%
(maximum) and
±2% (typical)
air pressure range
(full)
-
-
-
± 1 hPa (typical)
at 300 ... 1100
hPa, 0 ... +40 °C
air pressure range
(ext)
-
-
-
± 1.7 hPa (typical)
at 300 ... 1100
hPa, -20 ... 0 °C
Protection
IP68
-
-
-

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
Product Name
7201
7202
Cable length
-
-
Connector
RJ45
RJ45
temperature range
-20°C to +80°C at ±2°C (max-
imum) and ±1°C (typical)
-20°C to +80°C at ±2°C (max-
imum) and ±1°C (typical)
air humidity range
(non-condensing)
-
0-100%, ±3% (maximum) and
±2% (typical)
The sensors are automatically detected after connect. This is indicated by the green
LED on the sensor port that is lit permanently. The sensor values are displayed at the
"Control Panel" web page:
A click on the link in the "Name" column opens the display of the Min and Max values.
The values in a column can be reset using the "Reset" button. The "Reset" button in the
name column deletes all stored Min and Max values.

Operating

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Operating
2 Operating
2.1 Operating the device directly
Port Switching
The current status of the output is indicated by the color of the LED. Red indicates that
the output is off, green shows that the output is on. On the device are the buttons "se-
lect" and "ok". If you press "select", the LED will blink for the first output, ie the output is
selected. Press "select" again to select the next output. Hold down the button "ok" for
two seconds, then the status of the selected output is toggled.
Display Information
If no port is selected manually, repeatedly pressing the "ok" button will show the IP-ad-
dress and the values of the external sensors on the display.
Status-LED
The Status LED shows the different states of the device:
·red: The device is not connected to the Ethernet.
·orange: The device is connected to the Ethernet and waits for data from the DHCP
server.
·green: The device is connected to the Ethernet and the TCP/IP settings are allocated.
·periodic blinking: The device is in Bootloader mode.
2.2 Control Panel
Access the web interface: http://"IP-address" and log-in.
The website provides an overview of the switching status and shows the measured val-
ues of the current banks A to E. If you click on a single port, the buttons appear to con-
trol the port:

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Operating
The port icon is green when a port is on or red when it is off. The output can be switched
manually using the "On" and "Off" buttons. If the output is switched on, it can be
switched off by pressing "Reset" until it switches on again after a delay. This delay time
is determined by the parameter Reset Duration, which is described in the chapter "Con-
figuration - Power Ports ". The "Close" button makes the buttons disappear again. An
additional small clock symbol indicates that a timer is active. Timers are activated by
switch-on delay, reset or batch mode. A flash on the icon indicates an error condition of
the eFuse.
An activated Watchdog is represented by an eye icon. An "X" means, that the address
that should be observed, could not be resolved. Two circular arrows show a booting
status.
Batchmode
Each individual port can be set for a selectable period of time to the state "switch on" or
"switch off". After the selected time they are automatically switched to the second
preselected state.
Optionally the device can be switched via a Perl script or external tools like wget. More
information is available on our support wiki at www.gude.info/wiki.
Measured values mains connection and power sources
For mains connection, current, voltage, phase angle, power factor, frequency, active, ap-
parent, reactive and residual power are measured.
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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Operating
Display of voltage and current of each source S1 to S5.
2.3 Maintenance
The actual device generation with IPv6 and SSL allows all maintenance functions in the
web interface to be carried out on the Maintenance Page .
Maintenance in the web interface
The following functions are available from the maintenance web page:
·Firmware Update
·Change the SSL certificate
·Load and save the configuration
·Restart the device
·Factory Reset
·Jump into the Bootloader
·Delete the DNS cache
Upload Firmware, Certificate or Configuration
On the Maintenance Page , select the required file with "Browse .." in the sections
"Firmware Update", "SSL Certificate Upload" or "Config Import File Upload" and press
"Upload". The file is now transferred to the update area of the device and the contents
are checked. Only now, pressing the "Apply" button will permanently update the data, or
abort with "Cancel".
Only one upload function can be initiated with a reboot, eg. you cannot transmit firm-
ware and configuration at the same time.
If after a firmware update, the web page is not displayed correctly anymore, this may
be related to the interaction of Javascript with an outdated browser cache. If a Ctrl-F5
does not help, it is recommended that you manually delete the cache in the browser op-
tions. Alternatively, you can test start the browser in "private mode".
During a firmware update, old data formats are sometimes converted to new struc-
tures. If an older firmware is newly installed, the configuration data and the energy
meters may be lost! If the device then does not run correctly, please restore the factory
settings (e.g. from the Maintenance Page ).
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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Operating
Actions in Bootloader mode
If the web interface of the device is no longer accessible, the device can be put into
Bootloader mode (see chapter Bootloader activation ). The following functions can be
executed using the GBL_Conf.exe application:
·Set IPv4 address, net-mask and gateway
·Turn HTTP password on and off
·Turn IP-ACL on and off
·Factory Reset
·Jump into the bootloader (can be switched on and off)
·Restart the device
For devices with relays, entering or exiting the bootloader mode does not change
the state of the relays as long as the operating voltage is maintained.
The GBL_Conf.exe program is available free of charge on our website www.gude.info and
can also be found on the enclosed CD-ROM.
Interface GBL_Conf
To check the network settings with GBL_Conf.exe, start the program and choose "All
Devices" in the "Search" menu. From the list select the appropriate device. The lower
part of the left half of the window now shows the current network settings of the device. If
the IP address is displayed with the default settings (192.168.0.2), either no DHCP
server is present on the network, or there could be no free IP address assigned to it.
·Activate the Bootloader Mode (see Chapter Bootloader Mode) and choose in menu
"Search" the item "Bootloader-Mode Devices only"
·Enter the desired settings in the edit window and save them with "Save Config".
·Deactivate the boot loader mode for the changes to take effect. Select again "All
Devices" in the "Search" menu of GBL_Conf.exe.
The new network configuration is now displayed.
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