Selecting a working mode

On the PCB in the pump, under the cap, is a 16-position switch to select the working mode. This working mode determines how the pump reacts on sensor, button, RS232 signals etcetra.

Each working mode is designed for a specific function.

You must select a working mode (only once) to let the working correspond with your application.

Working mode 0 = not used

(for older pumps this is a function to callibrate, but now callibration can be done much easier with the supplied Monitor Program)

 

 to calibrate all sensors

 

  
model #905,910,915 and #805,810,815,855

Working mode 1 = straight pumping mode (no sensors)

 deliver LN2 as controlled by pumpbutton or external signal Button on pump allows operator to toggle between Active and Sleep

Active = pumping on

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

FLOWRATE is set by potmeter on pump
model #905,910,915 and #805,810,815,855

Working mode 2 = FILL control (1 sensor)

 fill various vessels, one after the other Button on pump allows operator to toggle between Active and Sleep

Active = pumping on as long as sensor is warm, stop pumping when sensor is cold, return to sleep

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

FLOWRATE is set by potmeter on pump
model #905,910,915 and #805,810,815,855

Working mode 3 = automatic FILL control with timer (1 sensor)

 fill application repeatedly with timer Button on pump allows operator to toggle between Active and Sleep

Active = start pumping on as long as sensor is warm, stop pumping when sensor is cold, repeat after 1* hour

Sleep = stop Active, reset timer, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

FLOWRATE is set by potmeter on pump

*NOTE: timer setting can be changed in display screen on a computer in steps of 1 minute between 5 minutes minimum and 7 days maximum

*NOTE: for this appication the EXTRA sensor connection must be used
model #905,910,915 and #805,810,815,855

Working mode 4 = 1-point level control (1 sensor)

 maintain LN2 level at sensor height Button on pump allows operator to toggle between Active and Sleep

Active = pumping as long as sensor is warm, not pumping when sensor is cold

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

FLOWRATE is set by potmeter on pump
model #905,910,915 and #805,810,815,855

Working mode 5 = 2-point level control (2 sensors)

 maintain LN2 level between 2 sensors Button on pump allows operator to toggle between Active and Sleep

Active = start pumping when low sensor is warm, not pumping when high sensor is cold

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

FLOWRATE is set by potmeter on pump
model #905,910,915 and #805,810,815,855

Working mode 6 = 1-point level flow control (1 sensor)

 maintain LN2 level at sensor height, keep dripping to hold that level Button on pump allows operator to toggle between Standby and Sleep

Standby = pumping as long as sensor is warm, slower pumping when sensor is almost cold, stop pumping when sensor is completely cold

Sleep = stop Standby, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in STANDBY mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

FLOWRATE is set by potmeter on pump
Working mode 7 for future use    
model #910,915 and #810,815

Working mode 8 = local temperature control (1 sensors)

 deliver LN2 as controlled by temperature setpoint on pump, or external analog 0-5V signal Button on pump allows operator to toggle between Active and Sleep

Active = pumping as long as sensor is above- , not- or soft-pumping when sensor is below temperature setpoint (*1) pumpingflow is depending of the speed of the temperature changements. (P.I.D.)

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

FLOWRATE is set by potmeter on pump

(*1)temperature setpoint is depending on jumper setting JP7

(*2)range is depending on jumper setting JP6JP6 open = range -200 to +70 degrees CelciusJP6 closed = range +/- 30 degrees relative to potmeter P1 on print
model #910,915 and #810,815

Working mode 9 = FLOW control by external signal (no sensors)

 deliver LN2 as controlled by external analog 0-5V signal Button on pump allows operator to toggle between Active and Sleep

Active = pumping with flow as set by external 0-5 volt signal (0 volt = stop pumping)(*1)

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

Maximum FLOWRATE is set by potmeter on pump

(*1) external analog signal on pin 10 of 25 p D connector delivers a flow depending on the setting of the flowpotmeter on the pump 0 - 5 Volt deliveres 0 - 100% of the adjustment of the FlowPotmeter on the pump.
model #910,915 and #810,815

Working mode A = remote temperature control (1 sensor)

 deliver LN2 as controlled by external analog 0-5V signal(s) Button on pump allows operator to toggle between Active and Sleep

Active = pumping as long as sensor is above- , not- or soft-pumping when sensor is below temperature setpoint(*1) pumpingflow is depending of the speed of the temperature changements. (P.I.D.) Active = when pumping, use maximum flow as set by external 0-5 volt signal (0 volt = stop pumping)(*3)

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

Maximum FLOWRATE is set by potmeter on pump

(*1)temperature setpoint is depending on jumper setting JP7

(*2)range is depending on jumper setting JP6JP6 open = range -200 to +70 degrees CelciusJP6 closed = range +/- 30 degrees relative to potmeter P1 on print

(*3) external analog signal on pin 10 of 25 p D connector deliveres a flow depending on the setting of the flowpotmeter on the pump 0 - 5 Volt deliveres 0 - 100% of the adjustment of the FlowPotmeter on the pump.

(*4) external analog signal for temperature setpoint 0 - 5 Volt gives a setpoint from -200 to +70 degrees Celcius acording PT100 characteristics
model #910,915 and #810,815

Working mode B = FLOW control by external signal (and 1 sensor)

switchpos-B.GIF (1214 bytes)

 deliver LN2 as controlled by external analog 0-5V signal and 1 sensor Button on pump allows operator to toggle between Active and Sleep

Active = pumping with flow as set by external 0-5 volt signal (0 volt = stop pumping)(*1) pumping as long as sensor is warm, not pumping when sensor is cold

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connectorMaximum

maximum FLOWRATE is set by potmeter on pump

(*1) external analog signal on pin 10 of 25 p D connector deliveres a flow depending on the setting of the flowpotmeter on the pump 0 - 5 Volt deliveres 0 - 100% of the adjustment of the FlowPotmeter on the pump.
model #910,915 and #810,815

Working mode C = local temperature control (2 sensors)

switchpos-C.GIF (856 bytes)

 deliver LN2 as controlled by temperature setpoint on pump, or external analog 0-5V signal, and extra sensor for STOP Button on pump allows operator to toggle between Active and Sleep

Active = pumping as long as sensor is above- , not- or soft-pumping when sensor is below temperature setpoint (*1). Pumping as long as extra sensor is warm, not pumping when extra sensor is cold.  Pumping flow is depending of the speed of the temperature changements. (P.I.D.)

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

FLOWRATE is set by potmeter on pump

(*1)temperature setpoint is depending on jumper setting JP7

(*2)range is depending on jumper setting JP6. JP6 open = range -200 to +70 degrees Celcius. JP6 closed = range +/- 30 degrees relative to potmeter P1 on print
Working mode D = for future use     
model #915 and #815

Working mode E = remote temperature control (1 sensor controls pumping, additional sensor optional for measurement)

 deliver LN2 as controlled by external RS232 signals and 1 sensor Button on pump allows operator to toggle between Active and Sleep

Active = pumping as long as sensor is above- , not- or soft-pumping when sensor is below temperature setpoint as set by RS232 signal

pumpingflow is depending of the speed of the temperature changements. (P.I.D.)

input RS232 signal for temperature setpoint(*1)

input RS232 signal for flow(*2)

input RS232 signal for pumping status SLEEP, ACTIVE

output RS232 signal from pump status

output RS232 signal from both sensors

output RS232 signal from maximum flow setting on pump

output RS232 signal from setpoint

output RS232 signal from pressure, LED status, Beeper

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

Maximum FLOWRATE is set by potmeter on pump

(*1) input RS232 signal for temperature setpoint -200 to 50 gives a setpoint from -200 to +50 degrees Celcius.

(*2) input RS232 signal for flow deliveres a flow depending on the setting of the flowpotmeter on the pump. 0 - 100 deliveres 0 - 100% of the adjustment of the FlowPotmeter on the pump.

model #915 and #815

Working mode F = remote temperature control (2 sensors optional for measurement)

deliver LN2 as controlled by external RS232 signals Button on pump allows operator to toggle between Active and Sleep

Active = pumping as dictated by RS232 signals

input RS232 signal for flow (*1)

input RS232 signal for pumping status SLEEP, ACTIVE, PUMPING

output RS232 signal from pump status

output RS232 signal from both sensors

output RS232 signal from maximum flow setting on pump

output RS232 signal from pressure, LED status, Beeper

Sleep = stop Active, set internal freeze protector ON to prevent ice clogging in risepipe

pump can be put in ACTIVE mode with TTL signal or +24V signal on 25D connector

pump can be put in SLEEP mode with TTL signal or +24V signal on other pin of 25D connector

(Maximum FLOWRATE is NOT set by potmeter on pump)

(*1) input RS232 signal for flow 0 - 250 deliveres a flow from 0 to 250 mBar.
 

all models  #9xx and #8xx

25p Dconn pins

   1=14 AC1

AC or DC 12 to 24 Volts Power supply (min. 4 A.)

13=25 AC2

AC or DC 12 to 24 Volts Power supply (min. 4 A.)

17=18=19=20 system ground

8 RXD serial connection

9 TXD serial connection

4 TTL_1 input, 0 or 5 Volt, 0 Volt = switch pump to SLEEP

5 TTL_2 input, 0 or 5 Volt, 0 Volt = switch pump to ACTIVE

10 ext. flow input, analog 0-5 Volt

11 ext. temp setpoint input, analog 0-5 Volt

6 ext. EXTRA sensor input ( PT100 element ) to ground

7 ext. MAIN sensor input ( PT100 element ) to ground

15 opt1C optocoupler input 1 neg.

2 opt1A optocoupler input 1 pos. : 0 or 5-24 Volt input. 5-24 V. to switch pump to ACTIVE

16 opt2C optocoupler input 2 neg.

3 opt2A optocoupler input 2 pos. : 0 or 5-24 Volt input. 5-24 V. to switch pump to SLEEP

(*) connect C to ground and supply positive signal to A to switch

(*) OR, connect A to ground to use negative signal on C to switch

12 output TTL 5 Volt external heater LOW = active (*)

21 optEXH1E optocoupler output emitter for external heater (*)

22 optEXH1C optocoupler output collector for external heater (*)

23 optAL2E optocoupler output emitter ALARM

24 optAL2C optocoupler output collector ALARM

(*) connect E = emitter to ground to switch a positive signal

(*) OR, connect C = collector to ground to switch a negative signal