Autonics DPU1 Series User manual

L-28
DPU1/DPU3 Series
• High speed and high accuracy by digital control using high
speed CPU
• Various controls
- Phase control, feedback control (constant voltage/constant
current/constant power)
- Zero crossing cycle control (xed/variable cycles)
- Zero crossing ON/OFF control
• Improved maintainability with built-in fast-acting fuse and easy
fuse replacement
• Communication output model: RS485 (Modbus RTU)
• Various control inputs and DI inputs
- control input: analog (current, voltage), ON/OFF (voltage
pulse, no voltage), communication (RS485), potentiometer
- DI input: AUTO/MAN switching, RUN/STOP switching,
Reset, output holding, SP designation (6 setting points can be
customized)
• Various alarm output
- Overcurrent, overvoltage, fuse break, heat sink overheat,
device fault, heater break alarm (partial heater break
detection)
• Improved convenience by separating operation part
• Applicable load
- Supercantal, platinum, molybdenum, carbon, halogen lamps,
chrome, nickel, etc.
Control phase
Item
Rated load current
Size
Power supply
Option
DPU Digital Power Controller
R RS485 communication
D Remote Display Unit
A Remote Display Unit + RS485 communication
N No option
1 110VAC
2 220VAC
3 380VAC
4 440VAC
1 Single-phase
3 3-phase
Single-phase 3-phase
A 0 to 70A 0 to 50A
B 80 to 200A 70 to 200A
C 250 to 350A
D 400 to 600A
E Option
025 25A 180 180A
040 40A 200 200A
050 50A 250 250A
070 70A 350 350A
080 80A 400 400A
100 100A 500 500A
120 120A 600 600A
150 150A
1 2 ADPU 025 R
Digital Power Controllers
Features
Ordering Information
Size type
Size Current
capacity W H D P1 P2 Allowable cable thickness
A 0 to 70 A 97 260 170 82 150 Min. AWG 4
B 80 to 200 A 140 280 174 127 150 Min. AWG 4/0
C 250 to 350 A 213 338 179 193 200 Min. AWG 300MCM
D 400 to 600 A 278 418 212 261 200 Min. AWG 500MCM
Size Current
capacity W H D P1 P2 Allowable cable thickness
A 0 to 50A 140 306 200 127 150 Min. AWG 4
B 70 to 200A 213 365 217 195 200 Min. AWG 4/0
C 250 to 350A 278 450 227.5 261 200 Min. AWG 300MCM
D 400 to 600A 427 528 275.5 405 330 Min. AWG 500MCM
(unit: mm) (unit: mm)
DPU1 Series DPU3 Series
Please read “Safety Considerations”
in the instruction manual before using.

L-29
Digital Power Controllers
※1. Variable cycle control is only for single-phase model.
※2. The weight includes packaging. The weight in parenthesis is for unit only.
※Environment resistance is rated at no freezing or condensation.
Series DPU1 DPU3
Control phase Single-phase 3-phase
Power supply 110VACᜠ/ 220VACᜠ/ 380VACᜠ/ 440VACᜠ(FAN and control power 220VACᜠ50/60Hz separately)
Allowable voltage range 90 to 110% of rated voltage 85 to 115% of rated voltage
Rated frequency 50/60Hz (auto recognition), allowable frequency range: ±2Hz
Min. load current 1A
Output range Phase control: 5 to 98%, Z.C. control: 0 to 100%
Control method※1
• Phase control: Normal control (non-Feedback), constant voltage/constant current/constant power
control (Feedback)
• Cycle control (Z.C.): Fixed cycle control, Variable cycle control
• ON/OFF control (Z.C.)
Applied load • Phase control: resistance load, inductive load
• ON/OFF, Cycle control: resistance load
Power consumption Max. 7W (except FAN operation power) Max. 10W (except FAN operation power)
Display method
• Display value and SV display: 7-segment 4-digit
• Status display: 4 LED
• Display value percentage display: 11 LED Bar
• Display value and SV display: 7-segment 4-digit
• Status display: 6 LED
• Display value percentage display: 11 LED Bar
Output accuracy
• Constant voltage feedback control: Within ±3% F.S. of rated voltage
(within variable ±10% F.S. of rated voltage)
• Constant current feedback control: Within ±3% F.S. of rated voltage
(within variable 1 to 10 times of rated resistance)
• Constant power feedback control: Within ±3% F.S. of rated voltage
(within variable ±10% F.S. of rated voltage and within variable 1 to 10
times of rated resistance)
• Normal control: within ±10% F.S. of rated voltage
Set method By front keys, By communication
Control input
• Auto: 4-20mA / 0-20mA / 0-5VDCᜡ/ 1-5VDCᜡ/ 0-10VDCᜡ/ voltage pulse (0/12VDCᜡ (24VDCᜡ)) /
no-voltage input (ON/OFF) / communication input (RS485)
• Manual: inside 10kΩ adjuster, outside 3 to 10kΩ adjuster (min. 2W)
Digital input (DI) AUTO/MAN switching, RUN/STOP switching, RESET, Output holding, SP setting (SP1 to 6)
Display content Control input, load voltage, load current, load power, load resistance, power supply frequency
Min. display output Min. 2.5% of rated voltage/current
Option output RS485 communication output (Modbus RTU method), [max. 32 units]
Dielectric strength 2,000VAC 50/60Hz for 1 min (between input terminal and power terminal)
Vibration 0.75mm amplitude at frequency of 5 to 55Hz (for 1 min) in each X, Y, Z direction for 2 hours
Insulation resistance Over 200MΩ (at 500VDC megger)
Noise immunity ±2kV the square wave noise (pulse width 1㎲) by the noise simulator
Environ-
ment
Ambient temp. - 10 to 50℃, storage: - 20 to 80℃
Ambient humi. 5 to 90%RH, storage: 5 to 90%RH
Approval
ᜢ
Weight※2
• A size
: approx. 3.2kg
(approx. 3.0kg)
• C size
: approx. 12.1kg
(approx. 11.0kg)
• B size
: approx. 5.6kg
(approx. 3.0kg)
• D size
: approx. 19.3kg
(approx. 11.0kg)
• A size
: approx. 7.6kg
(approx. 6.5kg)
• C size
: approx. 21.1kg
(approx. 20.0kg)
• B size
: approx. 13.0kg
(approx. 11.5kg)
• D size
: approx. 35.7kg
(approx. 30.8kg)
Specifications

L-30
DPU1/DPU3 Series
•Do not mix noise to input cable. It is recommended to use shield cable, twisted cable as input cable for e󰀨ective noise.
•If there is possible to a󰀨ect inductive noise, it is recommended to use shielded cable at high-frequency power for e󰀨ective noise.
•DI input switch should be for low current and ON resistance should be max. 20Ω (including cable resistance).
•DI input terminals are COM, DI-1 to 3, RUN, AUTO.
•For remote display unit option model, use connection cable as our standard cable.
•When connecting ⑥, ⑪, it operates as MANUAL. When connecting, ⑥, ⑦, ⑪, it operates AUTO.
DPU1 Series
A Size B Size C Size D Size
R S U F.G.
R SU F.G.
R S U F.G.
R S U F.G.
Internal adjuster
(10kΩ)
3-level slide
switch
Voltage input
Voltage
Input
External
VR
AC POWER IN Load
Connections

L-31
Digital Power Controllers
DPU3 Series
•Do not mix noise to input cable. It is recommended to use shield cable, twisted cable as input cable for e󰀨ective noise.
•If there is possible to a󰀨ect inductive noise, it is recommended to use shielded cable at high-frequency power for e󰀨ective noise.
•DI input switch should be for low current and ON resistance should be max. 20Ω (including cable resistance).
•DI input terminals are COM, DI-1 to 3, RUN, AUTO.
•For remote display unit option model, use connection cable as our standard cable.
•When connecting ⑥, ⑪, it operates as MANUAL. When connecting, ⑥, ⑦, ⑪, it operates AUTO.
A Size B Size C Size D Size
Internal adjuster
(10kΩ)
3-level slide
switch
U
L1
(R)
L2
(S)
L3
(T)
V W
F.G.
U
L1
(R)
L2
(S)
L3
(T)
V W
F.G.
U
L1
(R)
L2
(S)
L3
(T)
V W
F.G.
U
L1
(R)
L2
(S)
L3
(T)
V W
F.G.
Load
Load
Load
Voltage input
Voltage
Input
External
VR

L-32
DPU1/DPU3 Series
(unit: mm)
DPU1 Series
● A Size: DPU1 A-025/040/050/070
※25A, 40A, 50A are not attached a fan.
● B Size: DPU1 B-080/100/120/150/180/200
80
135°
154
209.5
110
147
170
60
Fixed 4-M5
82 (P1)
97
40
150 (P2)
260
30
3
120
Fixed 4-M5
127 (P1)
140
50
150 (P2)
280
30
3
120
135°
222
241.5
121.5
151
174
Dimensions

L-33
Digital Power Controllers
● C Size: DPU1 C-250/350
● D Size: DPU1 D-400/500/600
In case of remote display unit + RS485 communication option
※ It is recommended for remote panel cable to use max. 5 m to prevent noise. (Check the length when ordering it.)
250
278
160°
494
156
195
Fixed 4-M6
261 (P1)
278
40
200 (P2)
280
90
212
418 345 38
4
213
160°
365
132
163
Fixed 4-M6
193 (P1)
213
50200 (P2)
179
338
300 38
4
● Panel cut-out
of the display model
53.5+0.5
0
100.5+0.5
0
55
102
55
102

L-34
DPU1/DPU3 Series
● A Size: DPU3 A-025/040/050
DPU3 Series (unit: mm)
182
Fixed 4-M5
127 (P1)
140
150 (P2)63.526
306
160°
235.6
138
200
239
● B Size: DPU3 B-070/080/100/120/150/180/200
199 183
160°
364
176
217
278
Fixed 4-M6
195 (P1)
213
200 (P2) 40
280
365
43.1
● Panel cut-out
of the display model
53.5 +0.5
0
100.5 +0.5
0
In case of remote display unit + RS485 communication option
※It is recommended for remote panel cable to
use max. 5m to prevent noise. (Check the
length when ordering it.)
55
102

L-35
Digital Power Controllers
● C Size: DPU3 C-250/350
● D Size: DPU3 D-400/500/600
Fixed 4-M6
261 (P1)
278
200 (P2)
280
40
140.5
92.5
450
370 40
125.5
160°
489
173.5
227.5
311
Fixed 4-M8
405 (P1)
427
330 (P2)
453
66.5
160°
746
204.5
275.5
404.5
204.5
167
167
528
463 32.5

L-36
DPU1/DPU3 Series
Input type Input selection
AUTO/MANUAL selection
by terminal input (DI) [terminal 7 and 11]
Type Parameter
AUTO
input
Analog
input
Current
4-20mA
Input
impedance
100Ω
4-20
0-20mA 0-20
Voltage
1-5VDC
Input
impedance
25Ω
1-5
0-5VDC 0-5
0-10VDC 0-10
ON/OFF
input
Voltage pulse 0/12VDC
SSR
No-voltage
pulse ON/OFF
-
Comm.
input RS485
- -
COM
MANUAL input
Internal
adjuster 10kΩ
- -
External
adjuster 3 to 10kΩ
- -
When the AUTO/MAN terminal input is ON (close),
it is AUTO input operation. When it is OFF (open),
it is MAN (manual) input operation.
When the AUTO/MAN terminal input is OFF (open)
(MANUAL operation), only INT or EXT input selected by
the 3-level slide switch is available.
In AUTO input, select it at control input type[ IN-P] at
setting mode1.
In MANUAL input, set output slope manual adjustment
[A-GA] in operating mode as OFF and select the input
by the inside 3-level slide switch.
Type Description
MAN
MAN
MAN
INT
Adjust output slope with the inside adjuster
MAN
EXT
Adjust output slope with an outside adjuster
AUTO No function
①RUN indicator: Turns ON in RUN, turns OFF in STOP
②AUTO indicator: Turns ON in AUTO, turns OFF in MANUAL
③EVT indicator
: Turns ON in Digital Input (DI-1 to 3) ON, ashes in alarm output
④ R, S, T indicators: Turns ON di󰀨erently by displayed value in display part
E.g.) When R, S turn ON, it displays voltage between R-S line
⑤Display part: Displays selected display value content in RUN mode, displays parameter and set value in SET mode
⑥V, A indicators
: The V indicator turns ON when displaying voltage.
The A indicator turns ON when displaying current.
The V, A indicators turn ON when displaying power.
The V, A indicators turn OFF when displays resistance and
input value.
⑦Bar display: Turns ON as 0 to 100% ratio for selected display value
⑧key: Used to enter parameter mode, monitoring mode and to move between parameters
⑨, key: Used to move setting modes and to set parameters.
⑩key: Used to return to RUN mode from SET mode
<single-phase> <3-phase>
① ①④ ②② ③③
⑤
⑧
⑥
⑦
⑩ ⑩
⑨
⑦
⑥
Unit Description
Control Input
● Output slope manual adjustment [ A-GA] as OFF
: Select the input by the inside 3-level slide switch

L-37
Digital Power Controllers
Output slope setting [ SLOP]
This function is to set output changed ratio by control input
from 0.00 to 1.00 range.
•Output value when setting slope: Input (%)×Slope value
Output (%)
Control input signal (%)
Output slope
value (%)
Start limit [ S-LM ] and start limit time [ S-LT]
When power is ON, changing to RUN status from STOP
status, or alarm reset, set limit output value and time to
prevent the inrush current or error current.
Regardless of control method setting (phase control or
cycle control), it operates as phase control.
•Setting range for start limit: 0 to 110% of output
•Setting range for start limit time: 0 to 100 sec
(0 sec: not using this function)
• A: SOFT START function ends
• B: SLOW UP function ends
• C: SLOW DOWN function ends
Output (%)
Start
limit
SOFT START set time
Start limit set time
Time
SLOW UP set time
SLOW DOWN set time
SLOW UP / SLOW DOWN [ UP-T/ DN-T ]
It is same purpose as soft start function. Soft start starts
only one time at rst but slow up/slow down function start
during operation.
Regardless of control method setting (phase control or
cycle control), it operates as phase control.
When it reaches to the target output value, slow up/slow
down functions end.
•Setting range: 0 to 999 sec
(0 sec: not using this function)
Output (%)
• A: SOFT START function ends
• B: SLOW UP function ends
• C: SLOW DOWN function ends
SOFT START set time
Time
SLOW UP set time
SLOW DOWN set time
SOFT START [ ST-T ]
When controlling the load which has inrush current
(platinum, molybdenum, tungsten, infrared lamp, etc)
in power ON, or when control input changes rapidly, it
prevents the load to increase output gradually within the
set time. Set the time for soft start.
Regardless of control method setting (phase control or
cycle control), it operates as phase control.
Set the time to reach output from 0 to 100%.
It operates when it is RUN mode from STOP status after
supplying power or reset. When it reaches to the target
output value, soft start function ends.
Soft start set time (t) is the time up to 100% increase of
output applied to load. When the nal target output value
is 50%, taken time to reach is t/2.
Reaching time to the nal target output value = Target
output (%)× t
※E.g.)
SOFT START time: 25 sec, nal target output: 80%
0.8×25 = 20 sec
•Setting range: 0 to 100 sec (0 sec: not using this function)
Output (%)
Time
SOFT START set time
When output applied to load is 100%,
When output applied to load is 50%,
Functions

L-38
DPU1/DPU3 Series
●
AUTO/MANUAL selection [terminal 7 and 11]
● RUN/STOP switching [terminal 6 and 11]
Select AUTO (close)/MANUAL (open) input by terminal input.
AUTO mode controls output according to control input as
analog input (voltage, current) or ON/OFF input (including SSR
pulse input).
MANUAL mode controls according to control input as the
inside adjuster adjustment or an outside adjuster adjustment.
When selecting AUTO (close), the front AUTO indicator turns
ON or selecting MANUAL (open), the front AUTO indicator
turns OFF.
Select RUN (close)/STOP (open) operation status by
terminal input.
RUN mode operates as the set contents by control input.
STOP mode is standby status.
When selecting RUN (close), the front RUN indicator turns
ON or selecting STOP (open), the front RUN indicator
turns OFF.
Digital input (DI)
Below functions are available by terminal input.
Digital input has ve terminals; AUTO/MANUAL terminal,
RUN/STOP terminal, and DI-1 to 3 terminals.
Select the function for each input terminal of DI-1 to 3.
Output high limit value [ H-OL],
Output low limit value [ L-OL]
This function is to limit output range to protect load.
•Setting range: 0 to 110%
(Output low limit value < Output high limit value)
Output high-limit: H-OL
Output low-limit: L-OL
Control input signal (%)
Output (%)
Current limit [ C-LM ]
It operates when normal, constant voltage, constant
current mode of phase control.
When using the load which has high inrush current, it
restrains the current to protect thyristor.
Especially, in case of voltage feedback, only voltage
current, it may over the rated current of thyristor because
current ows by resistance value of the load. To prevent
over the rated current, limit the current.
•Setting range: 0 to 110% of rated current
Overcurrent
alarm
Current
alarm
Output
current
(%)
Current limit set position
(0 to 110%)
Current limit
set point
Over current
alarm point
Time
BASE-UP [ B-UP ]
This function is to add base-up set value to input signal.
It is available only when output low-limit value is 0%.
It is limited by start limit value at initial start.
•Setting range:
BASE-UP SV (%) < Output high-limit value
•Output value for BASE-UP setting
: Input (%)×Slope value+ BASE-UP SV
BASE-UP SV (%)
Control input signal (%)
Output (%)
Output slope manual adjustment [ A-GA ]
This function is to adjust manually (inside or outside adjuster)
output value ratio for control input.
When AUTO operation and output slope manual adjustment
[ A-GA] is set as ON, [ SLOP] is not able to set.
It displays slope value by the inside or outside adjuster input.
●
Output slope manual adjustment [ A-GA] as ON
: Set output slope by the inside 3-level slide switch
Type Description
MAN
MAN
MAN
INT
Adjust output slope with the inside adjuster
MAN
EXT
Adjust output slope with an outside adjuster
AUTO No function
100% of inside or
outside adjuster
50% of inside or
outside adjuster
Control input signal (%)
Output (%)
Functions

L-39
Digital Power Controllers
● RESET [ RST]
● HOLD [ HOLD]
● Single SP [ SP1,SP2,SP3]
Set [SP1, SP2, SP3] to each digital input for output to
reach to the relevant SP.
It is available to set individually at [DI-1, DI-2, DI-3],
and duplicated setting is allowed.
When setting SP1, SP1 is displayed in operating mode,
same as SP2 and SP3.
When this function is not set, the parameters to set SP in
operating mode are not displayed.
After selecting RESET function, turn digital input ON (close)
and open, this unit resets and re-starts.
After selecting HOLD function and digital input is ON (close),
output and display value of this unit is hold. (it operates hold
when digital input maintains ON (close) status.)
● Digital input (DI-1 to DI-3) setting
[terminal 8, 9, 10 and 11 (COM)]
Select the each function for each digital input at parameters
[ D I-1, D I- 2, D I- 3].
When setting ON (close) to DI input, the front EVT indicator
turns ON or setting OFF (open), the front EVT indicator
turns OFF.
As below, there are 6 functions to select.
※SP M is available only in D1-1.
DI-1 DI-2 DI-3 Operating Mode
SP value set parameter
SP1 SP2 SP3
SP1 (e.g.: 20%)
SP2 (e.g.: 40%)
SP3 (e.g.: 60%)
※E.g.)
• A: When DI-1 is ON
• B: When DI-2 is ON
• C: When DI-3 is ON
Output
(%)
Select
function Terminal 8 and 11
ON (CLOSE)
Executes
selected
function
Terminal 9 and 11
ON (CLOSE)
Terminal 10 and 11
ON (CLOSE)
Proportional and integral constant set of
feedback control
● Multi SP [ SP M]
It is available to set total 6 SPs and to control output
depending on 3 digital inputs' setting.
This function is selectable only in [DI-1]. When selecting
[SP M] at [DI-1], [DI-2, DI-3] parameters are not
displayed.
When selecting [SP M] at [DI-1], 6 parameters to set SPs
are displayed in operating mode.
( SP1, SP2, SP3, SP4, SP5, SP6)
Proportional Integral Control:
This is the combination of proportional control and integral
control. Proportional control operates soft control without
overshoot and hunting for the set value. Integral control
modies o󰀨set automatically to reach the set value stably.
The optimal values of proportional constant and integral
constant are set as factory defaults. When changing
proportional constant and integral constant, it may cause
response delay in feedback control or overshoot or hunting.
● Proportional constant set [ P]
It compensates error from the target value proportionally.
If proportional constant value is small, response is fast and
it may cause overshoot or hunting. If proportional constant
value is big, response is slow.
•Setting range: 1 (0%) to 2000 (100%)
※E.g.)
DI-1 DI-2 DI-3 Operating Mode
SP value set parameter
ASP1 (e.g.: 20%)
BSP2 (e.g.: 40%)
CSP3 (e.g.: 60%)
DSP4 (e.g.: 80%)
ESP5
(e.g.: 100%)
FSP6 (e.g.: 0%)
G
-
※: Close, ×: Open
● Integral constant set [ I]
※
P, Iparameters are displayed when control mode is
constant voltage, constant current, constant power mode
in phase control.
It compensates cumulative error from the target value.
The set integral constant is the time when proportional
value and integral value are equal.
If integral constant value is small, response is fast and it
may cause overshoot or hunting. If integral constant value
is big, response is slow.
•Setting range: 0.1 to 999.9 sec
※A, B, C, D, E, F
: Close/Open status
of Digital Input
Output
(%)

L-40
DPU1/DPU3 Series
Input correction [ IN-B]
It compensates the o󰀨set between actual input value and
measured input value.
•Setting range: -99.9 to 99.9%
※E.g.) Input type is 4-20mA,
When 4mA is applied and the input monitor value
displays, set [IN-B] as -)5 and the input monitor
value displays as 0.0%.
Actual input signal (%)
Input corrected signal (%)
Measured
input signal
(%)
Actual input signal (%)
Display value content selection [ D1SP]
You can select display value content for the display part in
RUN mode.
••Display range
- Single-phase: [LD-V], [AMP], [KW], [REF]
- 3-phase: [U-V], [V-W], [W-U], [LA-U], [LA-V], [LA-W],
[KW], [REF]
Input slope correction [ SPAN]
It compensates the gain of the measured 100% input for
actual 100% input value.
•Setting range: -99.9 to 99.9%
※E.g.) Input type is 4-20mA,
When 20mA is applied and the input monitor value
displays 99.5%, set [SPAN] as )5 and the input
monitor value is 100.0%.
Actual input signal (%)
Input corrected signal (%)
Measured
input signal
(%)
Actual input signal (%)
Bar graph content selection [ BAR]
You can select display value content for the bar graph.
••Display range
- Single-phase: [LD-V], [AMP], [KW], [REF]
- 3-phase: [U-V], [V-W], [W-U], [LA-U], [LA-V], [LA-W],
[KW], [REF]
Alarm
Lock [ LOCK]
This function is to limit parameter set value check and
change.
Set this parameter lock function to enter setting mode1.
When setting this parameter lock as LOC2 or LOC3, only
parameter lock is displayed in setting mode 1.
※1: For single-phase model, output stops.
For 3-phase model, when 1-phase break, it maintains
output and when 2-phase break, it stops output.
:Enable to check and set, :Enable to check/Disable to set,
: Disable to check
Parameter OFF LOC1 LOC2 LOC3
Operating Mode set group
Setting Mode 2 set group
Setting Mode 1 set group
Alarm Parameter Operation Clear alarm
Overcurrent alarm O-C Stops output
(SCR OFF) · Re-supply the
power.
· RESET
( key)
· Switch to
STOP mode
Overvoltage alarm O-V
Fuse break alarm FUSE ※1
Heatsink overheat
alarm TEMP Stops output
(SCR OFF)
Element error
alarm SCR
Heater break
alarm HBK Continues operation
Automatically
cleared within
the setting range
Load resistance display method [ DRES]
This function is for display load resistance [ RES] into a
percentage in monitoring mode when disconnecting the
parallel load. You can select this value as increase rate
of load resistance [UP] or as decrease rate of number of
loads [ DOWN].
※Decrease rate of number of loads [ DOWN] displays
correct decrease rate only when the connected each
load resistance is same.
①Increase rate of load resistance[ UP]
It is based on 100% of load resistance (R), 1Ω. When
disconnected R1to R5, load resistance is 2 Ω and load
resistance [ RES] in monitoring mode displays 200%.
②Decrease rate of number of loads [ DOWN]
It is based on 100% of 10 loads (R1to R10). When
disconnected R1to R5, the number of load are 5 (R6
to R10) and load resistance [ RES] in monitoring mode
displays 50%.
E.g.)Each of R1to R10 is 10Ω and load resistance (R) is 1Ω,
When disconnecting R1to R5,
R1
RR2R9R10
Functions

L-41
Digital Power Controllers
Full load auto recognition [ F-LD]
When operating load recognition function, it outputs 100%
for 3 sec. Do not use this unit to the device which has
problem 100% output of load.
Set [F-LD] as ON in setting mode 1 [ ST-1] group and
press the key, load auto recognition function operates.
According to secular changes of the load, execute this
function regularly.
※Be sure that when auto recognition starts, it operates
100% output for 3 sec.
※Caution
Do not execute this function as ON without profession’s
consultations. When executing this function, voltage,
current outputs fully. Be sure that it may cause damage
to the load.
When using special load using low voltage and high
current such as (super)tantalum, SiC, molybdenum,
tungsten, etc, it may cause heater break alarm [ H-BK].
This alarm does not have problem in operation but it
occurs when it does not detect the load when using as
low voltage. Set the below notes to clear the alarm.
Note>When using special load such as (super) tantalum,
SiC, molybdenum, tungsten, H-BK alarm clear
method:
· Set load resistance display method [DRES] as
UP in setting mode 1 [ ST-1].
· Set heater break alarm value [ HB-V] as 500 in
setting mode 2 [ ST-2].
E.g.)When SV for heater disconnection alarm is 50%,
alarm turns ON at 50%, alarm turns OFF at 49%.
Heater disconnection alarm [ HB-A]
Regardless of control method (phase control, cycle control),
it operates. For the accurate operation, over 10% of control
output (phase control, cycle control) and over 30% of rated
current are required.
•Setting range: 10 to 500%
Hysteresis of heater disconnection alarm is xed as 1% for
ON/OFF interval.
When load resistance display method is set as [UP], it is
over the set value, this alarm occurs.
[H-BK] and display value ashes for 2 sec in turn in the
display part and EVT lamp ashes for 0.5 sec.
Even though heater disconnection alarm occurs, control
operation continues.
It is cleared automatically when the value is below the SV
of heater disconnection alarm value.
ON
OFF
49% 50%
SV
● Heater disconnection alarm value setting [HB-V]

L-42
DPU1/DPU3 Series
Monitoring mode can monitor measured several physical quantities of this unit, not set parameters.
DPU1 Series
※1. P: Press any key among , .
※To return RUN mode, press the key at any parameter, or not to operate any keys in 30 sec.
For ON/OFF input, or SSR pulse input, it displays 0 or 100.
• Setting range: Within 0.0 to 100.0%
Monitors measured voltage at load within the rated voltage range.
Monitors measured current at load within the rated current range.
Monitors measured power at load within the rated power range.
Displays measured resistance at load for initial set resistance as
percentage
Displays frequency of power
IN 10)0
LD-V 22)0
LD-A 5)0
KW 1)00
RES 50
FREQ 6)00
P
P
P
P
P
P
Input value
Load voltage
Load current
Load power
Load
resistance
Power
frequency
V
V
A
A
※1
RUN
mode
1 sec
)00
)0
)0
)0
)0
)0
)0
DPU3 Series
For ON/OFF input, or SSR pulse input, it displays 0 or 100.
• Setting range: Within 0.0 to 100.0%
Monitors measured voltage at load within the rated voltage range.
Monitors measured current at load within the rated current range.
Monitors load power output at 3-phase.
Displays LLLL, 10 to 500%, HHHH.
Displays frequency of power within 45.0 to 65.0Hz range
V
V
V
A
A
A
IN )0
U-V
V-W
W-U
LA-U
LA-V
LA-W
KW
RES )0
FREQ )00
P
P
P
P
P
P
P
P
P
P
Input value
Voltage between
U-V line
Voltage between
V-W line
Voltage between
W-U line
U-phase
load current
V-phase
load current
W-phase
load current
Load power
Load resistance
Power frequency
V
A
※1
RUN
mode
※1. P: Press any key among , .
※To return RUN mode, press the key at any parameter, or not to operate any keys in 30 sec.
1 sec
Monitoring Mode

L-43
Digital Power Controllers
Operating Mode [ OP]
Displays operating mode.
Set soft start time.
• Setting range: 0 to 100 sec
Set limit output value.
• Setting range: 0 to 110%
Set start limit time.
• Setting range: 0 to 100 sec
Set output slope manual adjustment.
Set output change ratio by control input.
• Setting range: 0.00 to 1.00%
※Not displayed when output slope manual adjustment [ A-GA] is ON.
Set base-up value.
• Setting range: 0 to 100%
Set output low-limit.
• Setting range: 0 to 110%
Set output high-limit.
• Setting range: 0 to 110%
Set current limit value.
• Setting range: 0 to 110%
• Setting range: 0 to 100%
※Displayed only when DI-1 to DI-3 of ST-1 mode is set SP M or SP1 to SP3.
Set proportional constant.
• Setting range: 1 to 2000
※Displayed only for constant voltage, constant current, constant power in phase control.
Set integral constant.
• Setting range: 0.1 to 999.9
※Displayed only for constant voltage, constant current, constant power in phase control.
• Setting range: 0 to 100%
※Displayed only when DI-1 of ST-1 is set SP M.
Set slow-up time.
• Setting range: 0 to 999 sec
※Not displayed when C-MD mode is set as cycle control.
Set slow-down time.
• Setting range: 0 to 999 sec
※Not displayed when C-MD mode is set as cycle control.
OP
H-OL
50ST-T
C-LM
S-LM
SP1
S-LT
SP2
A-GA
SP3
SLOP
SP4
B-UP
SP5
UP-T
SP6
DN-T
P
L-OL
I
P
Operating mode
Soft start time
Start limit
Start limit time
Output slope
Base up
Slow up
Slow down
Output low-limit
value
Output high-limit
value
Current limit
Setting point 1
Setting point 2
Setting point 3
Setting point 4
Setting point 5
Setting point 6
Proportional
constant
Integral constant
Output slope
manual adjustment
※1
OFFON
RUN
mode
3 sec
※1. P: Press any key among , .
※To return RUN mode, press the key at any parameter, or not to operate any keys in 30 sec
※: This parameter may or may not appear, depending on the other parameter settings.
Parameter Mode

L-44
DPU1/DPU3 Series
Setting Mode 1
Displays setting mode 1.
Select input type.
Select control method.
※Variable cycle control[ V-CY] is only for single-phase model.
Select digital input.
※Multi SP function [ SP M] is available only in DI-1.
Set input correction value.
• Setting range: -99.9 to 99.9%
Set input slope correction value.
• Setting range: -99.9 to 99.9%
Select display value content.
Select bar graph display content.
Select display method of load resistance value.
Select full load auto recognition enable/disable.
Set communication address.
• Setting range: 1 to 99
Select communication speed
(baud rate).
Select lock function.
Select communication write enable/disable.
(ENA: Enables to write, DISA: Disables to write)
OP ST-1
DRES
4-20IN-P P
F-LD
C-MD
ADDR
DI-1
BAUD
DI-2
COMW
DI-3
LOCK
IN-B
SPAN
DISP
BAR
Operating Mode Setting Mode 1
Control input type
Control method
DI-1 function
DI-3 function
DI-2 function
Input correction
Input slope correction
Display value content
Bar graph content
Load resistance
display method
Full load auto recognition
Com. address
Com. speed
Com. write
Lock
ONOF
ㅉV-CYF-CYW-FBㅉC-FBV-FBPA
HOLD
RSTSP3SP2SP1SP M
3841929648
LOC3LOC2LOC1OFF
UPDOWN
ONOFF
DISAENA
※Displayed only for RS485 communication option model.
※1
RUN
mode
3 sec
※1. P: Press any key among , .
※If there is no operation any keys in 30 sec, it returns to RUN mode.
※Press the key when entering ST-1 setting mode in any parameters, it moves to ST-1.
Press the key once more, it returns to RUN mode.
※When setting [LOCK] as LOC2 or LOC3, and entering ST-1, it displays only [ LOCK] parameter.
※: This parameter may or may not appear, depending on the other parameter settings.
1-phase:
3-phase:
REFKWAMPLD-V
LA-UW-UV-WU-V
LA-VLA-WKWREF

L-45
Digital Power Controllers
Setting Mode 2
Set alarm value for overcurrent.
• Setting range: 0 to 120%
Select alarm value for overvoltage.
• Setting range: 0 to 120% for single-phase model, 0 to 300% for 3-phase model
Set alarm delay time for overcurrent.
• Setting range: 0 to 100 sec
Set alarm delay time for overvoltage.
• Setting range: 0 to 100 sec
Set alarm value for heater break.
• Setting range: 10 to 500%
Select heater break alarm channel.
Select overcurrent alarm channel.
Select each alarm channel.
OP ST-2 ST-1
HEAT
120OC-V P
SCR
HB-V
OC-T
HB-A
OC-A
OV-V
OV-T
OV-A
FUSE
Operating Mode Setting Mode 2Setting Mode 1
Overcurrent
alarm value
Element error
alarm CH
Heatsink overheating
alarm CH
Fuse break alarm CH
Overvoltage alarm CH
Overvoltage delay time
Overvoltage
alarm value
Overcurrent alarm CH
Overcurrent
delay time
Heater break
alarm value
Heater break
alarm CH
AL2AL1NON
AL2AL1NON
AL2AL1NON
※1
Displays setting mode 2.
RUN
mode
3 sec
※1. P: Press any key among , .
※If there is no operation any keys in 30 sec, it returns to RUN mode.
※Press the key when entering ST-2 setting mode in any parameters, it moves to ST-2.
Press the key once more, it returns to RUN mode.
※When setting [LOCK] as LOC2 or LOC3, and entering ST-2, it displays only [ LOCK] parameter.
Set heater disconnect alarm delay time.
※Heater disconnect alarm delay time [HB-T]is displayed in only 1-phase model.
• Setting range: 0, 1, 2, 3, 5, 10, 20, 30 sec
HB-T
Heater disconnect
alarm delay time

L-46
DPU1/DPU3 Series
Parameter Default Parameter Default Parameter Default Parameter Default
ST-T 0000 B-UP 00)0 C-LM 11)0 SP5 00)0
S-LM 11)0 UP-T 0003 SP1 00)0 SP6 00)0
S-LT 0000 DN-T 0003 SP2 00)0 P 0150
A-GA OFF L-OL 00)0 SP3 00)0 I 02)0
SLOP !000 H-OL 11)0 SP4 00)0
Parameter Default Parameter Default Parameter Default Parameter Default
OCㅉ-V 11)0 OV-V 11)0 FUSE AL1 HB-V 01)0
OC-T 0005 OV-T 0005 HEAT AL1 HB-A AL2
OC-A AL1 OV-A AL1 SCR AL1 HB-T 30
Operating Mode
Setting Mode 1
Setting Mode 2
Parameter Default Parameter Default Parameter Default Parameter Default
IN-P 4-20 IN-B 00)0 BAR LD-V COMW ENA
C-MD PA SPAN 00)0 U-V LOCK OFF
DI-1 SP M DISP LD-V F-LD OFF
DI-2 SP1 U-V ADDR 0001
DI-3 SP1 DRES DOWN BAUD 384
Single
-phase
Single
-phase
3-phase
3-phase
Communication specification
Function code format
Function code 3 (0×03) = Read holding registers
Function code 4 (0×04) = Read input registers
(Master → Slave)
0×01 0×03 0×00 0×00 0×00 0×16 ×× ××
Add. Com-
mand
Start add. Number of data CRC 16
High Low High Low High Low
● Request
(Slave → Master)
0×01 0×83 ×× ×× ××
Address Response
command
Exception
code CRC 16
● Error
(Slave → Master)
0×01 0×03 0×10 0×03 0×E8 ... 0×03 0×E8 ×× ××
Add.
Response
command
Number
of data
1st data ... 16th data CRC 16
High Low ... High Low High Low
● Response
Function code 6 (0×06) = Write single registers
(Master → Slave)
0×01 0×04 0×00 0×00 0×00 0×10 ×× ××
Add. Com-
mand
Start add. Number of data CRC 16
High Low High Low High Low
● Request
(Master → Slave)
0×01 0×06 0×00 0×00 0×03 0×E8 ×× ××
Add. Com-
mand
Address Number of data CRC 16
High Low High Low High Low
● Request
(Slave → Master)
0×01 0×84 ×× ×× ××
Address Response
command
Exception
code CRC 16
● Error
(Slave → Master)
0×01 0×86 ×× ×× ××
Address Response
command
Exception
code CRC 16
● Error
(Slave → Master)
0×01 0×04 0×10 0×03 0×E8 ... 0×03 0×E8 ×× ××
Add.
Response
command
No. of
data
1st data ... 16th data CRC 16
High Low ... High Low High Low
● Response
(Slave → Master)
0×01 0×06 0×00 0×00 0×03 0×E8 ×× ××
Add.
Response
Command
Address Data CRC 16
High Low High Low High Low
● Response
Protocol Modbus RTU
Connection type RS485
Application standard Compliance with EIA RS485
Max. connection 32 units (address: 01 to 64)
Synchronization method Asynchronous
Communication method 2-wire half duplex
Communication distance Max. 800m
Communication speed 4800, 9600, 19200, 38400bps
Communication
response wait time 5 to 99ms
Data bit 8-bit (xed)
Parity bit Even (xed)
Stop bit 1-bit (xed)
Communications
Factory Default
Single
-phase

L-47
Digital Power Controllers
Address mapping table
Function code 16 (0×10) = Write multiple registers
(Master → Slave)
0×01 0×10 0×00 0×00 0×00 0×10 0×20 ×× ××
Add. Com-
mand
Start add. Number of
data
Num-
ber of
byte
CRC 16
High Low High Low High Low
● Request (Slave → Master)
0×01 0×90 ×× ×× ××
Address Response
Command
Exception
code CRC 16
● Error
※ Exception code
· 0×01: Not supported command code
· 0×02: Starting address of required data and transmittable
address are di󰀨erent.
· 0×03: The number of required data is over than the number of
transmittable data.
· 0×04: Transmittable data does not process properly.
(Slave → Master)
0×01 0×10 0×00 0×00 0×03 0×E8 ×× ××
Add.
Response
command
Start add. Number of data CRC 16
High Low High Low High Low
● Response
No. (address) Item Factor
300001 (0000) Output voltage *0.1
300002 (0001) Load current *0.1
300003 (0002) Power *0.1
300004 (0003) Load resistance *0.1
300005 (0004) Power frequency *0.01
300101 (0064) Product No. H 00
300102 (0065) Product No. L 00
300103 (0066) Hardware version 10
300104 (0067) Software version 10
300105 (0068) Model name 1 "DP"
300106 (0069) Model name 2 "2-"
300107 (006A) Model name 3 "00"
300108 (006B) Model name 4 " "
300109 (006C) Model name 5 " "
300110 (006D) Model name 6 " "
300111 (006E) Model name 7 " "
300112 (006F) Model name 8 " "
300113 (0070) Model name 9 " "
300114 (0071) Model name 10 " "
300115 (0072) Reserved Reserved
300116 (0073) Reserved Reserved
300117 (0074) Reserved Reserved
300118 (0075) Coil start address 0
300119 (0076) Coil quantity 0
300120 (0077) Input start address 0
300121 (0078) Input quantity 0
300122 (0079) Holding reg start address 0
300123 (007A) Holding reg quantity 32
300124 (007B) Input reg start address 0
300125 (007C) Input reg quantity 5
Input registers [DPU3 Series]
No. (address) Item Factor
300001 (0000) Load voltage between U-V line (Vrms) *0.1
300002 (0001) Load voltage between V-W line (Vrms) *0.1
300003 (0002) Load voltage between W-U line (Vrms) *0.1
300004 (0003) U-phase load current (Arms) *0.1
300005 (0004) V-phase load current (Arms) *0.1
300006 (0005) W-phase load current (Arms) *0.1
300007 (0006) Power *0.01
300008 (0007) Load resistance (% display for initial load) *0.1
300009 (0008) Power frequency *0.01
300101 (0064) Product No. H 00
300102 (0065) Product No. L 00
300103 (0066) Hardware version 10
300104 (0067) Software version 10
300105 (0068) Model name 1 "DP"
300106 (0069) Model name 2 "2-"
300107 (006A) Model name 3 "00"
300108 (006B) Model name 4 " "
300109 (006C) Model name 5 " "
300110 (006D) Model name 6 " "
300111 (006E) Model name 7 " "
300112 (006F) Model name 8 " "
300113 (0070) Model name 9 " "
300114 (0071) Model name 10 " "
300115 (0072) Reserved Reserved
300116 (0073) Reserved Reserved
300117 (0074) Reserved Reserved
300118 (0075) Coil start address 0
300119 (0076) Coil quantity 0
300120 (0077) Input start address 0
300121 (0078) Input quantity 0
300122 (0079) Holding reg start address 0
300123 (007A) Holding reg quantity 32
300124 (007B) Input reg start address 0
300125 (007C) Input reg quantity 5
Input registers [DPU1 Series]