Error Messages; Interfaces And Outputs - IKA HBR 4 control Betriebsanleitung

Error messages

The following error messages can be displayed (Fig. 20) and have the following causes described:
Error code Cause
Er 2 In remote operation (PC) mode with activated
watchdog function in mode 1: no communication
between PC and HBR 4 control. PC does not
transmit any data within the set watchdog time, or
connection to PC is interrupted.
Er 3 Internal device temperature above 76 °C
Er 4 Motor speed deviates ±300 rpm from the speed
Set speed greater than 350 rpm
Stirring function turned on, Actual speed = 0 rpm
Er 4
Indication after approx 30 sec
Er 5 No temperature increase in PT 1000.60/61 at con-
tinuous temperature difference (corresponding to
the set error 5 response time)
Er 11 Temperature sensor PT 1000 unplugged during
operation
Er 12 Temperature sensor PT 1000 plugged in during
operation
Er 20 Safety relay does not close
Er 21 Safety relay does not open
Er 22 Disturbance before the last time the device was
switched OFF or safety temperature is lower then
the temperature of the medium
Er 23 Adjustable safety circuit faulty
Er 24 Safety temperature set exceeded
Er 26 System dry, no medium in the bath container
Er 27 Calibration error
Er 28 Sensor rupture
Er 29 Short circuit in the safety sensor or controller and
safety sensor mixed up
Er 30 Short circuit in the controller sensor
If the actions described fail to resolve the fault or another error code is displayed then take one of the following steps:
- contact the IKA service department,
- send the device for repair, including a short description of the fault.
Correction
Change watchdog time.
Transmit data from PC within set watchdog time (OUT_WDx@m).
Check cable and plug.
Allow the device to cool down
Mains switch OFF/ON
Reduce load
Mains switch OFF/ON
Mains switch OFF/ON
Increase the speed or turn on the stirring function
Place the temperature sensor in the medium.
Adjust the error 5 response time according to the response cha-
racteristic of the system.
Plug in and unplug temperature sensor only when HBR 4 control
is switched off.
Plug in and unplug temperature sensor only when HBR 4 control
is switched off.
Safety circuit is set too low, check mains voltage (mains voltage
must be larger than the nominal voltage - 10%).
Mains switch OFF/ON
RESETbutton / service
RESET button
Mains switch OFF/ON / service
Set safety temperature higher
Mains switch OFF/ON
Allow the device to cool down, then refill with medium.
Mains switch OFF/ON
Mains switch OFF/ON. When switching on, a calibration is auto-
matically carried out.
Mains switch OFF/ON
Service
Service
The device can be operated in "Remote" mode via an RS 232 using
the laboratory software Labworldsoft
Note: Please comply with the system requirements together with
the operating instructions and help section included with the soft-
ware.
Configuration
The RS 232 serial interface can be used to operate the device using
a computer and a suitable user program (Labworldsoft
In order to increase safety when operating the HBR 4 control
using a PC, a watchdog function can be activated which monitors
the continuous data flow (see section entitled: "Watchdog func-
tion").
• The functions of the interface circuit between the laboratory de-
vice and the automation system are a selection from the signals
specified in the EIA standard RS 232 C as per DIN 66020 Part 1.
The assignment of the different signals can be seen in the image.
• Standard RS 232 C, corresponding to DIN 66259 Part 1 is valid
for the electronic characteristics of the interface circuits and as-
signment of signal states.
• Transmission process: asynchronous character transmission in
start-stop operation.
• Transmission type: full duplex
• Character format: character composition according to data for-
mat in DIN 66022 for start-stop operation. 1 start bit, 7 charac-
ter bits, 1 parity bit (even), 1 stop bit.
• Transmission speed: 9600 bit/s
• Data flow control: hardware handshake
• Access method: data transmission from the device to the com-
puter only occurs after a request from the computer.
Summary of available NAMUR commands
Abbreviations used:
X,y =
m =
n =
X = 1
X = 2
X = 3
X = 4
X = 52
X = 54
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Interfaces and outputs

Command syntax
® .
The following points should be noted for the instruction set:
• Commands are generally sent from the computer (master) to the
lab device (slave).
• The device sends only at the computer's request. Even fault in-
dications cannot be sent spontaneously from the device to the
computer (automation system).
• Commands and parameters, as well as consecutive parameters,
must be separated by at least one space (code: hex0x20).
® ).
• Each individual command (incl. parameters and data) and each
response are terminated with Blank CR LF (Code: hex 0x0D and
0x0A) and have a maximum length of 80 characters.
• The decimal separator in a number is a dot (Code: hex 0x2E).
The above details correspond as far as possible to the recommen-
dations of the NAMUR working party (NAMUR recommendations
for the design of electrical plug connections for analogue and
digital signal transmission on individual items of laboratory control
equipment, rev. 1.1).
numbering parameter (integer)
variable value, integer
variable value, floating-point number
Temperature of external sensor
Bath temperature
Bath safety temperature
Speed
External PT 1000 temperature sensor offset in K (-3.0 <= n <=+3.0 )
Error 5 response time in minutes (1 <= n <= 30)
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