TABLE OF CONTENTS

TABLE OF CONTENTS

Appendix S

Roofbolter Pump motor...1

S.1

Load profile...2

S.1.1

Section 21 ...2

S.1.1.1

Morning shifts ...2

S.1.1.2

Afternoon shifts ...5

S.1.2

Section 61 ...8

S.1.2.1

Morning shifts ...8

S.1.2.2

Afternoon shifts ...11

S.2

Histogram ...14

S.2.1

Section 21 ...15

S.2.1.1

Morning shifts ...15

S.2.1.2

Afternoon shifts ...16

S.2.2

Section 61 ...17

S.2.2.1

Morning shifts ...17

S.2.2.2

Afternoon shifts ...18

S.3

Thermal capacity ...19

S.3.1

Section 21 ...19

S.3.1.1

Morning shifts ...19

S.3.1.2

Afternoon shifts ...21

S.3.2

Section 61 ...23

S.3.2.1

Morning shifts ...23

S.3.2.2

Afternoon shifts ...25

1

APPENDIX S

ROOFBOLTER PUMP MOTOR

Typical nameplate data for the pump motor of a Roofbolter can be seen in Table S-2.

The pump motor measured at both sections was a 30 kW induction motor with a full

load current rating of 20 A.

Table S-1: Nameplate data of the pump motor on a CM.

Table S-2: Production figures for shifts that the conveyor motor was

investigated.

Date

Morning

Afternoon

Morning

Afternoon

17-May-2005

858

2145

-

-18-May-2005

1320

2112

-

-19-May-2005

1716

2013

-

-23-May-2005

-

-

1740

2030

24-May-2005

-

-

1450

2320

25-May-2005

-

-

2320

1160

Sect 21

Sect 61

Power

30

kW

Voltage

1000 V

Duty

S1

Current

20

A

Ins class

F

RPM

1460

pf

0.94

S.1 LOAD PROFILE

The next section focuses on the load profiles of the pump motor. Each graph shows

the line voltage and the voltage limits, the load current and full load current capacity of

the pump motor. The morning shifts and afternoon shifts are separated as well as the

measurements made at the different sections.

S.1.1 SECTION 21

S.1.1.1

Morning shifts

Figure S.1-1: Load current and voltage for a pump motor – 17 May 2005.

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

3

Figure S.1-2: Load current and voltage for a pump motor – 18 May 2005.

Figure S.1-3: Load current and voltage for a pump motor – 19 May 2005.

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

Figure S.1-4: Load current and voltage for a pump motor – 19 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 12:30 12:35 12:40 12:45 12:50 12:55 13:00

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

5

S.1.1.2

Afternoon shifts

Figure S.1-5: Load current and voltage for a pump motor – 17 May 2005.

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

Figure S.1-6: Load current and voltage for a pump motor – 18 May 2005.

Figure S.1-7: Load current and voltage for a pump motor – 19 May 2005.

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full Load (A)

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

7

Figure S.1-8: Load current and voltage for a pump motor – 19 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 19:30 19:35 19:40 19:45 19:50 19:55 20:00

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

S.1.2 SECTION 61

S.1.2.1

Morning shifts

Figure S.1-9: Load current and voltage for a pump motor – 23 May 2005.

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full Load (A)

9

Figure S.1-10: Load current and voltage for a pump motor – 24 May 2005.

Figure S.1-11: Load current and voltage for a pump motor – 24 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

0 200 400 600 800 1000 1200 18:00 18:05 18:10 18:15 18:20 18:25 18:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

Figure S.1-12: Load current and voltage for a pump motor – 25 May 2005.

Figure S.1-13: Load current and voltage for a pump motor – 25 May 2005

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

0 200 400 600 800 1000 1200 9:30 9:35 9:40 9:45 9:50 9:55 10:00

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

11

S.1.2.2

Afternoon shifts

Figure S.1-14: Load current and voltage for a pump motor – 23 May 2005.

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

Figure S.1-15: Load current and voltage for a pump motor – 24 May 2005.

Figure S.1-16: Load current and voltage for a pump motor – 24 May 2005

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

0 200 400 600 800 1000 1200 18:00 18:05 18:10 18:15 18:20 18:25 18:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

13

Figure S.1-17: Load current and voltage for a pump motor – 25 May 2005.

Figure S.1-18: Load current and voltage for a pump motor – 25 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

0 200 400 600 800 1000 1200 19:30 19:35 19:40 19:45 19:50 19:55 20:00

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 10 20 30 40 50 60 70 80

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

S.2 HISTOGRAM

The next section focuses on the frequency with which a Roofbolters pump motor

consumed a certain load current. The graphs show the number of times a certain

current has been consumed. The tables give data about the tonnes produced during

the shift and the percentage time of the shift that the motors were producing. The time

that the motors have been over loaded or loaded within the full load rating of the motor

is given as a percentage of the actual producing time. The morning shifts and

afternoon shifts are separated as well as the measurements made at the different

sections.

15

S.2.1 SECTION 21

S.2.1.1

Morning shifts

Table S-3: D Data for the total consumption of a pump motor in section 21.

Figure S.2-1: Histogram for current consumed by a pump motor.

17-May-05 18-May-05 19-May-05

Tonnes/CM/Shift

858

1320

1716

% Time of shift producing

-

-

53.73%

% of Production time underloaded

-

-

89.80%

% of Production time overloaded

-

-

10.20%

0 1000 2000 3000 4000 5000 6000 7000 0 1 2 3 4 5 6 7 8 9 _{10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25}

Current bins (A)

Fr

eq

ue

nc

y

17-May-05 18-May-05 19-May-05

S.2.1.2

Afternoon shifts

Table S-4: Data for the total consumption of a pump motor in section 21.

Figure S.2-2: Histogram for current consumed by a pump motor.

17-May-05 18-May-05 19-May-05

Tonnes/CM/Shift

2145

2112

2013

% Time of shift producing

-

-

80.38%

% of Production time underloaded

-

-

91.81%

% of Production time overloaded

-

-

8.19%

0 1000 2000 3000 4000 5000 6000 7000 0 1 2 3 4 5 6 7 8 9 _{10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25}

Current bins (A)

Fr

eq

ue

nc

y

17-May-05 18-May-05 19-May-05

17

S.2.2 SECTION 61

S.2.2.1

Morning shifts

Table S-5: Data for the total consumption of a pump motor in section 61.

Figure S.2-3: Histogram for current consumed by a pump motor.

23-May-05 24-May-05 25-May-05

Tonnes/CM/Shift

1740

1450

2320

% Time of shift producing

-

36.51%

71.58%

% of Production time underloaded

-

69.35%

95.05%

% of Production time overloaded

-

30.65%

4.95%

0 1000 2000 3000 4000 5000 6000 7000 0 1 2 3 4 5 6 7 8 9 _{10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25}

Current bins (A)

Fr

eq

ue

nc

y

23-May-05 24-May-05 25-May-05

S.2.2.2

Afternoon shifts

Table S-6: Data for the total consumption of a pump motor in section 61.

Figure S.2-4: Histogram for current consumed by a pump motor.

23-May-05 24-May-05 25-May-05

Tonnes/CM/Shift

2030

2320

1160

% Time of shift producing

-

30.11%

38.59%

% of Production time underloaded

-

72.38%

90.31%

% of Production time overloaded

-

27.62%

9.69%

0 1000 2000 3000 4000 5000 6000 7000 0 1 2 3 4 5 6 7 8 9 _{10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25}

Current bins (A)

Fr

eq

ue

nc

y

23-May-05 24-May-05 25-May-05

19

S.3 THERMAL CAPACITY

The next section focuses on the temperature of the windings of the pump motor. Each

graph shows the temperature of the motor, the load current and rated full load current

of the motor. The morning shifts and afternoon shifts are separated as well as the

measurements made at the different sections. The thermal time constant is

40 minutes.

S.3.1 SECTION 21

S.3.1.1

Morning shifts

Figure S.3-1: Load current and motor temperature for a pump motor

– 17 May 2005.

0 10 20 30 40 50 60 70 80 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C)

Figure S.3-2: Load current and motor temperature for a pump motor

– 18 May 2005.

Figure S.3-3: Load current and motor temperature for a pump motor

0 10 20 30 40 50 60 70 80 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C) 0 10 20 30 40 50 60 70 80 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C)

21

S.3.1.2

Afternoon shifts

Figure S.3-4: Load current and motor temperature for a pump motor

– 17 May 2005.

0 10 20 30 40 50 60 70 80 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C)

Figure S.3-5: Load current and motor temperature for a pump motor

– 18 May 2005.

Figure S.3-6: Load current and motor temperature for a pump motor

0 10 20 30 40 50 60 70 80 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full Load (A) Temp (deg C) 0 10 20 30 40 50 60 70 80 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C)

23

S.3.2 SECTION 61

S.3.2.1

Morning shifts

Figure S.3-7: Load current and motor temperature for a pump motor

– 23 May 2005.

0 10 20 30 40 50 60 70 80 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full Load (A) Temp (deg C)

Figure S.3-8: Load current and motor temperature for a pump motor

– 24 May 2005.

Figure S.3-9: Load current and motor temperature for a pump motor

0 10 20 30 40 50 60 70 80 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C) 0 10 20 30 40 50 60 70 80 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C)

25

S.3.2.2

Afternoon shifts

Figure S.3-10: Load current and motor temperature for a pump motor

– 23 May 2005.

0 10 20 30 40 50 60 70 80 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C)

Figure S.3-11: Load current and motor temperature for a pump motor

– 24 May 2005.

Figure S.3-12: Load current and motor temperature for a pump motor

0 10 20 30 40 50 60 70 80 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C) 0 10 20 30 40 50 60 70 80 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

C

ur

re

nt

(A

)

0 20 40 60 80 100 120 140 160

Te

m

pe

ra

tu

re

(d

eg

C

)

Current (A) Full load (A) Temp (deg C)