Hoffman Controls Model 610 Series - Page 17

17
Sequence of Operation Con't
UP
and
DOWN
buttons to select a trip current appropriate for
the application. Range is
5.0 to 200
amps in
0.
5
amp increments
between
5
.0
and
2
5
amps and in
1.0
amp increments between
25
and
200
amps.
The default is
10.0
amps.
The current trip value is determined by selecting the
allowed overcurrent percentage and using the following formulas:
To calculate
the trip value for an 8% over current, to protect a
motor with an FLA of 6.5 amps:
O
vercurrent Ratio
= (8% + 100%) / 100 = 1.08
Trip Value
= 1.08 times 6.5 amps = 7.02 amps.
Use a trip value of 7.0 amps.
Press
the
ENTER
button after selecting the
ENTER button after selecting the ENTER
Trip Level in Amps
.
6.
If you selected the
3 Phase
option, in step 4 above, the next
display will be “
Phase Imbalance Allowed
”. Use the
UP
and
DOWN
buttons to choose a percent phase imbalance ranging
from 2% to 100%. Press the
ENTER
button when correct. The
ENTER button when correct. The ENTER
default is 12%.
7.
The next display will be "
Phase
Imbalance Delay: 3.0 sec
".
Phase Imbalance Delay provides an operator selectable time delay
before the Model 610's
Phase Imbalance
will trip. This is espe-
cially useful during part (split) winding motor startup. The time
delay
can be varied from 2.0 to 30.0 seconds in 0.5 second
steps.
Use the
UP
and
DOWN
buttons to choose a phase imbalance
delay time. Press the
ENTER
button when correct.
ENTER button when correct. ENTER
The default
delay is 3.0 seconds.
8.
If you selected the
3
phase
option in step 4 above, the next
display will be “
Check Phase Order?
” When selected,
p
hase order
is verified each time line voltage is applied to the load. The time
delay selected in the
Phase Imbalance Delay
menu above, is used
Phase Imbalance Delay menu above, is used Phase Imbalance Delay
as the delay time employed before phase order is checked. Use the
UP
and
DOWN
buttons to select “
Yes
” or “
No
” and press the
ENTER
button. The default is "
ENTER button. The default is "ENTER
Yes
".
9
.
The menu should have returned to the Home Screen. Now
press the
MODE
button three times. The display should indicate
MODE button three times. The display should indicate MODE
“
Temperature Trip Settings
”.
10
.
Press the
ENTER
button. The display should indicate “
ENTER button. The display should indicate “ENTER
Use
Exhaust Temp?
” Use the
UP
and
DOWN
buttons to choose “
Yes
”
or “
No
” and press the
ENTER
button. The default is
ENTER button. The default is ENTER
“
No
”.
11.
If you selected “
Yes
” in the previous step, the next display
will be "
Exh Sensor Type
". Use the
UP
and
DOWN
buttons
to
choose the type of sensor
used. The range is "
Omega 10K
"
,
"
PTC
"
or "
NTC
"
. Then press the
ENTER
button. The default is
ENTER button. The default is ENTER
"
Omega 10K"
.
12.
If you selected "
Omega10K
" in step
1
1
above, the next
screen will be "
Exhaust Trip Val
". Use the
UP
and
DOWN
buttons to select the desired high temperature exhaust trip value
in
°
F
. The range is
F. The range is F
80
°F
to
300°F
. Press the
300°F. Press the 300°F
ENTER
button to save
ENTER button to save ENTER
the value. The default is "
225
"
13.
If you selected "
PTC
"
in step
1
1
above, the next display
will be "
Exhaust Trip Val
"
in "
Ohms"
.
Use the
UP
and
DOWN
buttons to select the desired high temperature exhaust trip resis-
tance value in ohms.
The range is
100 Ohms t
o
20.0K
Ohms
20.0K Ohms 20.0K
.
Press the
ENTER
button to save the value. The default is "
ENTER button to save the value. The default is "ENTER
100
0
"
14.
If you selected "
N
TC
"
in step
1
1
above, the next display
will be "
Exhaust Trip Val
"
in "
Ohms"
.
Use the
UP
and
DOWN
buttons to select the desired high temperature exhaust trip resis-
tance value in ohms.
The range is
100 Ohms to
20.0K
Ohms
20.0K Ohms 20.0K
.
Press the
ENTER
button to save the value. The default is "
ENTER button to save the value. The default is "ENTER
100
0
"
15.
If you selected "
No
" in step
10
above, the
display will now
indicate “
Use Oil Temp?
”
Use the
UP
and
DOWN
buttons to
choose “
Yes
” or “
No
” and press the
ENTER
button. The default
ENTER button. The default ENTER
is
“
No
”.
16.
If you selected "
No
" in the previous step, the menu should
have returned to the Home Screen. Now press the "
MODE
"
button four (4) times. The display should indicate "
Trip Auto
Reset and Alarm
". Go to step
3
4
, on page 18,
to continue with
the next display.
17.
If you selected "
Yes
" in step 15 above, the next display will
be "
Oil Sensor Type
". Use the
UP
and
DOWN
buttons to
choose
the type of sensor
used. The range is "
Omega10K
"
, "
PTC
"
or
"
NTC
"
. Then press the
ENTER
button. The default is
ENTER button. The default is ENTER
"
Omega
10K
".
18.
If you selected "
Omega10K
" in step
1
7
above, the next
screen will be "
Oil
Trips On?
". Use the
UP
and
DOWN
buttons
to select
"
High
",
"
Low
" or
"
Both
"
high and low
temperature trip
high and low temperature trip high and low
values in
°
F
. Press the
F. Press the F
ENTER
button to continue. The default is
ENTER button to continue. The default is ENTER
"
Both
".
19.
If you selected "
High
" temperature in the previous screen,
the next display will be "
Set Oil High Trip
" in
°
F
.
F. F
Use the
UP
and
DOWN
buttons to select the desired high oil trip temperature
value in
°
F
.
F.F
The range is
2
0
°F
to
200°F
. Press the
200°F. Press the 200°F
ENTER
button
ENTER button ENTER
to save the value.
The default is "
175
"
20
.
If you selected "
Low
" temperature in step
1
8
above,
the next
display will be "
Set Oil Low Trip
" in
°
F
.
F. F
Use the
UP
and
DOWN
buttons to select the desired low oil trip temperature value in
°
F
.
F.F
The range is
2
0
°F to
200°F
. Press the
200°F. Press the 200°F
ENTER
button to save the
ENTER button to save the ENTER
value.
The default is "
6
0
"
21.
If you selected "
Both
" high and low temperature trip points
in step
1
8
above,
the next display will be "
Set Oil High Trip
" in
°
F
.
F. F
Use the
UP
and
DOWN
buttons to select the desired
high
oil
trip temperature value,
in
°
F
.
F. F
T
hen press the
ENTER
button. The
ENTER button. The ENTER
default is "
175
".
22.
The next display should be "
Set Oil Low Trip
" in
°
F
.
F. F
Use
the
UP
and
DOWN
buttons to select the desired low oil trip
temperature value in
°
F
.
F.F
The range is
2
0
°F to
200°F
. Press the
200°F. Press the 200°F
ENTER
button to save the value.
ENTER button to save the value. ENTER
The default is "
6
0
".
23.
If you selected "
PTC
"
in step
1
7
above,
the next display will
be "
Oil Trips On?
".
Use the
UP
and
DOWN
buttons to select
"
High
", "
Low
" or "
Both
" high and low temperature trip values
in ohms (resistance)
.
Press the
ENTER
button to continue.
ENTER button to continue. ENTER
The
default is "
Both
".
24.
If you selected "
High
"
in the previous test step,
the next
display will be "
Set Oil Hi Trip
" in "
Ohms"
.
Use the
UP
and
Ovorcurrent Ratio = (
overcurrent percentage + 100%
)
divided by 100
.
Trip Value =
Overcurrent Ra
tio times motor's FLA
.