Ika RET control-visc User Manual download pdf (Page 32)

“Watchdog” functions; monitoring of the serial data ﬂow

If, once this function has been activated (see NAMUR commands),

there is no retransmission of the command from the computer

within the set time (“watchdog time”), the heating and stirring

functions are switched off in accordance with the set “watchdog”

function or are changed to the set target values.

The data transmission may be interrupted by, for example, a crash

in the operating system, a power failure in the PC or an issue with

the connection table between the computer and REC control.

“Watchdog” - mode 1

If there is an interruption in data communications (longer than

the set watchdog time), the heating and stirring functions are

switched off and ER2 is displayed.

“Watchdog” - mode 2

If there is an interruption in data communications (longer than

the set watchdog time), the speed target value is changed to

the WD safety speed limit and the temperature target value is

changed to the WD safety temperature limit value. The warning

WD is displayed.

Connection possibilities between the RET control

and external devices

The following adapters and adapter cables are available from IKA

for connecting the RET control to external devices.

PC 1.1 cable

The PC 1.1 cable is used to connect the 9-pin plug to a computer.

Accessories

Troubleshooting

The device will indicate that there is a fault by displaying an error

message “Er X” (see table) on the screen.

Heating will be switched off permanently (exception: WD - see

table).

The stirring function continues to operate at the pre-set speed if

there is a fault in the heating circuit (exception: WD - see table).

In order to reset the device after a fault, it may need to be discon-

nected from the power supply for several seconds. The period the

device is switched off may also need to be longer if the tempera-

tures need to be counterbalanced (residual heat display may no

longer be active; see “Residual heat display”).

The safety circuit test takes place within 20 seconds of switching

on the device; after the test, the other monitoring functions are

activated.

If a fault cannot be eliminated directly, you must perform a

RESET (see “Settings” menu). If the faults still cannot be elimi-

nated, the appliance must be inspected by a technical service

technician.

•Magneticrods:

ø 6mm; max. length 15 mm

ø 7mm; max. length 60 mm

ø 10mm; max. length 80 mm

•RS 1 Set of magnetic stirring bars

•RSE Stirring bar remover

•H 1000 Beaker 1l

•H 1500 Beaker 1.5l

•H 3000 Beaker 3l

•H 5000 Beaker 5l

•H 8000 Beaker 8l

•H 135.3 Flask carrier

•H 135.310 Quarter 20ml reaction vessel

•H 135.311 Quarter 30ml reaction vessel

•H 135.312 Quarter 40ml reaction vessel

•H 135.313 Quarter 4ml reaction vessel

•H 135.314 Quarter 8ml reaction vessel

•H 135.315 Quarter 16ml reaction vessel

•H 135.4 Reaction block for 100ml round ﬂask

•H 135.410 Insert for 10ml round ﬂask

•H 135.411 Insert for 25ml round ﬂask

•H 135.412 Insert for 50ml round ﬂask

•H 135.5 Reaction block for 500ml round ﬂask

•H 135.510 Insert for 200ml round ﬂask

•H 135.511 Insert for 250ml round ﬂask

•H 135.512 Insert for 300ml round ﬂask

•H 135.6 Reaction block for 1,000ml round ﬂask

•H 135.610 Insert for 500ml round ﬂask

•H 16 V Support rod

•H 16.1 Extension

•H 38 Holding rod

•H 44 Boss head clamp

•PT100.50 Temperature sensor

•PT100.51 Temperature sensor, glass coated

•PT1000.50 Double temperature sensor

•PT1000.51 Double temperature sensor, glass coated

for further accessories see www.ika.com.

RxD 2

TxD 3

GND 5

RTS 7

CTS 8

2 RxD

3 TxD

5 GND

7 RTS

8 CTS

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 87 88

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Ika RET control-visc User Manual Page 32

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