Watson & Sons 520DUN User Manual

m-520dun-4x-gb-05

1

Declaration of conformity

3

2

Declaration of incorporation

3

3

Five-year warranty

4

4

When you unpack your pump

5

5

Information for returning pumps

6

6

Peristaltic pumps: an overview

7

7

Safety notes

8

8

Pump specifications

10

8.1

Dimensions

15

9

Good pump installation practice 16
9.1

General recommendations 16

9.2

Do’s and do not’s

17

10 Connecting this product to a 

power supply

18

11 Start-up check list

21

12 Switching the pump on for the 

first time

21

13 Switching the pump on in 

subsequent power cycles 
(if not in auto-restart mode)

23

14 Manual operation

24

14.1

Keypad functions 
in manual mode

24

14.2

Keypad lock

27

14.3

Keypad beep

27

14.4

Manual operation 
and remote digital 
inputs and outputs

27

15 Main menu

28

15.1

Keypad functions in 
menu screens

28

15.2

Main menu entry

29

16 Pin-secure process protection

30

17 Calibrate

31

18 Setup

35

18.1 Trim

36

18.2 Analogue

37

18.3 Display

41

18.4 Pump 

number

42

18.5 Baud

42

18.6 Stop 

bits

43

18.7 Xon/Xoff

43

18.8 Flow 

units

44

18.9 Run 

time

45

18.10 Outputs

46

18.11 Remote stop

48

18.12 Auto-restart

50

18.13 Set maximum speed

51

18.14 Backlight

51

18.15 ROM

52

18.16 Language

52

18.17 Defaults

53

18.18 Beep

53

18.19 Security code

54

18.20 Exit

55

19 Pin-out details

55

20 MemoDose

56

20.1  Changing dosing speed

57

20.2 Footswitch 

operation 

with MemoDose

58

21 Exit

58

22  Automatic control wiring

59

22.1  520N module fitting

59

22.2 Wiring 

up

61

22.3  Speed: analogue input

64

22.4  Scaling: analogue input

65

22.5  Speed: analogue output

66

22.6 Tachometer 

frequency 

output

66

22.7  Run / stop input

67

22.8 Direction 

input

67

22.9  Auto / manual toggle

68

22.10 MemoDose input

68

22.11 Leak detection input

68

22.12 Outputs 1, 2, 3, 4

69

22.13 Supply voltages

69

22.14 RS485 input

70

23 Automatic control 

and operation

71

24  Network control and operation

74

24.1  RS485 command strings

76

25 Troubleshooting

77

25.1 Error 

codes

78

26 Drive maintenance

79

27 Drive spares

79

28  The 520R, 520R2 

and 520RE pumpheads

80

28.1 Pumphead 

fitting

81