Hitachi Sj7002 Owners Manual

							

Phone: 800.894.0412   
						

							Operations 
and Monitoring
In This Chapter....page
— Introduction.......................................................................................   2
— Optional Controlled Decel and Alarm at Power Loss........................   4
— Connecting to PLCs and Other Devices...........................................   7
— Using Intelligent Input Terminals.....................................................   13
— Using Intelligent Output Terminals..................................................   43
— Analog Input Operation...................................................................   63
— Analog Output Operation................................................................   66
— Setting Motor Constants for Vector Control....................................   69
— PID Loop Operation........................................................................\
   75
— Configuring the Inverter for Multiple Motors....................................   76
4

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]  
						

							Introduction
Operations
and Monitoring
4–2
Introduction
The previous material in Chapter 3 gave a refe rence listing of all the programmable functions 
of the inverter. We suggest that you first scan through the listing of inverter functions to gain a 
general familiarity. This chapter will buil d on that knowledge in the following ways:
1. Related functions – Some parameters interact with or depend on the settings in other 
functions. This chapte r lists “required settings” for a programmable function to serve as a 
cross-reference and an aid in  showing how functions interact.
2. Intelligent terminals  – Some functions rely on an inpu t signal from control logic terminals 
or generate output si gnals in other cases.
3. Electrical interfaces  –  This chapter shows how to make connections between the inverter 
and other electrical devices.
4. Auto-tuning  – The SJ700
2 inverter has the ability to run a  calibration procedure in which it 
takes measurements of the motor’s electrical ch aracteristics. This chapter shows how to run 
the auto-tuning procedure to help the inverter  run the motor more smoothly and efficiently.
5. PID Loop Operation  – The SJ700
2 has a built-in PID loop th at calculates the optimal 
inverter output frequency to control an external  process. This chapter shows the parameters 
and input/output terminals associated with PID loop operation.
6. Multiple motors  – A single SJ700
2 inverter may be used with two or more motors in some 
types of applications. This chapter shows the el ectrical connections and inverter parameters 
involved in multiple-motor applications.
The topics in this chapter can help you decide the features that are important to your applica-
tion, and how to use them. The basic installati on covered in Chapter 2 concluded with the 
powerup test and running the motor. Now, this ch apter starts from that point and shows how to 
make the inverter part of a larg er control or automation system.
Cautions for 
Operating
ProceduresBefore continuing, please read  the following Caution messages.
CAUTION:  The heat sink fins will have a high te mperature. Be careful not to touch them. 
Otherwise, there is the danger of getting burned.
CAUTION: The operation of the inverter can be easily changed from low speed to high speed. 
Be sure check the capability and limitations of the motor and machine before operating the 
inverter. Otherwise, it may  cause injury to personnel.
CAUTION: If you operate a motor at a frequency higher  than the inverter standard default 
setting (50Hz/60Hz), be sure to check the motor  and machine specifications with the respective 
manufacturer. Only operate the motor at elevated frequencies after getting their approval. 
Otherwise, there is the danger of equipment damage.

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]  
						

							SJ7002 Inverter
Operations
and Monitoring
4–3
Warnings for 
Operating
ProceduresBefore continuing, please read  the following Warning messages.
WARNING: Be sure to turn ON the input power supply only after closing the front case. While 
the inverter is energized, be sure not to open  the front case. Otherwise, there is the danger of 
electric shock.
WARNING: Be sure not to operate electrical equipm ent with wet hands. Otherwise, there is 
the danger of electric shock.
WARNING: While the inverter is energized, be sure not to touch the inverter terminals even 
when the motor is stopped. Otherwise, th ere is the danger of electric shock.
WARNING: If the Retry Mode is selected, the motor may suddenly restart after a trip stop. Be 
sure to stop the inverter before approaching the machine (be sure to design the machine so that 
safety for personnel is secure even if it restar ts.) Otherwise, it may cause injury to personnel.
WARNING: If the power supply is cut OFF for a short  period of time, the inverter may restart 
operation after the power supply recovers if the Run command is active. If a restart may pose 
danger to personnel, so be sure to use a lock-out  circuit so that it will not restart after power 
recovery. Otherwise, it may cause injury to personnel.
WARNING: The Stop Key is effective only when th e Stop function is enabled. Be sure to 
enable the Stop Key separately from the emergency stop. Otherwise, it may cause injury to 
personnel.
WARNING:  During a trip event, if the alarm reset is  applied and the Run command is present, 
the inverter will automatically restart. Be sure to apply the alarm reset only after verifying the 
Run command is OFF. Otherwise, it  may cause injury to personnel.
WARNING: Be sure not to touch the inside of the en ergized inverter or to put any conductive 
object into it. Otherwise, there is a danger of electric shock and/or fire.
WARNING: If power is turned ON when the Run command is already active, the motor will 
automatically start and injury may result. Befo re turning ON the power, confirm that the RUN 
command is not present.
WARNING: When the Stop key function is disabled,  pressing the Stop key does not stop the 
inverter, nor will it reset a trip alarm.
WARNING: Be sure to provide a separate, hard-wired emergency stop switch when the appli-
cation warrants it. 

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]  
						

							Optional Controlled Decel and Alarm at Power Loss
Operations
and Monitoring
4–4
Optional Controlled Decel and Alarm at Power Loss
With the default SJ7002 inverter configuration, a sudden po wer loss will cause the inverter to 
shut down immediately. If running at the time, the motor and load will coast to a stop. And 
without power, the inverter’s alarm output will  not activate. This default performance may be 
fine for applications with loads such as fans and pumps. However, some loads may require 
controlled decelera tions upon power loss, or you may wa nt an alarm signal upon power loss. 
This section describes how to  harness regenerative energy so  that the motor/load actually 
powers the inverter long enough to control a  final deceleration and power the alarm output.
The diagram below shows the default configurat ion. Chapter 2 covered wiring the power source 
to the inverter input and the inverter output to the motor. By default, the inverter’s internal 
control circuit gets its power from two phases  (R and T) from the input. The user-accessible
2-wire jumper (R–R0 and T–T0) connect s input power to the control circuit.
To provide power to the control circuit after  input power loss, you must change the control 
circuit wiring as shown below (s teps provided on following page).
U
V
W
Motor
R
S
T
T
R
R0
T0
Power source,  3-phase
2-wire 
jumper P
PD
RB N
To optional
braking resistor /
braking unit
Controlcircuit
RectifierInverter
Converter
DC bus
+
–
+
–
J51
Ferrite  filter SJ700
2
AL0
AL2
AL1
To external 
alarm circuit or  interface
L1
L2
L3 T1
T2
T3
U
V
W
Motor
R
S
T
T
R
R0
T0
Power source,  3-phase
2-wire 
jumper, 
20AWG P
PD
RB NTo optional
braking resistor / braking unit
Control
circuit
RectifierInverter
Converter
DC bus
+
–
+
–
J51
Ferrite  filter SJ700
2
AL0
AL2
AL1
To external 
alarm circuit or 
interface
L1
L2
L3

Phone: 800.894.0412   
						

							SJ7002 Inverter
Operations
and Monitoring
4–5
Follow the steps to implement the wiring change shown in the previous diagram.
1. Remove the 2-wire jumper J51 (terminals [R0] and [T0] to connector J51). 
2. Procure several inches of multi-strand 20 AWG (0.5mm
2) or slightly heavier wire.
3. Connect a wire to terminal [R0] that is lo ng enough to connect to terminal [P] (do not 
connect to [P] yet).
4. Connect a wire to terminal [T0] that is long enough to connect to terminal [N] (do not 
connect to [N] yet).
5. Remove the ferrite filter from the original jumper wire and then slide it onto the new wires 
connecting to terminals [R0] and [T0]. (Be sure to save the original jumper in a safe place.)
6. Connect the wire from [R0] to [P], and connect the wire from [T0] to [N] as shown.
More information on power lo ss related alarm functions, see  “
Instantaneous Power Failure / 
Under-voltage Signal” on page 4–48.
The following table lists the functions related to  the controlled deceleration at power loss 
feature. After making the wiring change, use func tion B050 to enable the feature. Use B051 to 
determine the point at which a de caying DC bus voltage will trigger the controlled deceleration. 
Use parameter B054 to specify an initial step -wise deceleration at power loss, and B053 to 
specify the duration of the linear  deceleration. Note that this feature also affects the output 
signals that indicate instan taneous power fail and unde r-voltage conditions (see “
Instantaneous 
Power Failure / Under-voltage Signal” on page 4–48).
Func.
CodeNameDescriptionRange
B050 Controlled deceleration and  stop on power loss Allows inverter control using regen-
erative energy to decelerate after loss 
of input power (requires jumper 
change) Two option codes:
00Disable
01Enable
B051 DC bus voltage trigger level  during power loss Sets trigger for co
ntrolled decelera-
tion and stop on power loss function 0.0 to 1000.V
B052 Over-voltage threshold during  power loss Sets over-voltage threshold for 
controlled deceleration function 0.0 to 1000.V
B053 Deceleratio n time setting 
during power loss Deceleration time in
verter uses only 
at power loss  0.01 to 99.99 sec. /
100.0 to 999.9 sec. /
1000 to 3600 sec.
B054 Initial output frequency  decrease during power loss Sets the initial decrease in output 
frequency upon power loss 0.00 to 10.00 Hz

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]  
						

							Optional Controlled Decel and Alarm at Power Loss
Operations
and Monitoring
4–6
The timing diagram below shows a power loss  scenario and the related parameter settings. 
During the controlled deceleration the inverter itself  acts as a load to decelerate the motor. With 
either a high-inertia load or a short deceleration  time (or both), it is possible that the inverter 
impedance will not be low enough  to continue linear deceleration and avoid an over-voltage 
condition on the DC bus. Use parameter B052 to  specify a threshold for the over-voltage. In 
this case, the inverter pauses  deceleration (runs at constant  speed). When the DC bus decays 
again below the threshold, linear  deceleration resumes. The pause/re sume process will repeat as 
necessary until the DC bus energy is de pleted (under-voltage condition occurs).
NOTE: (1) Be sure to set the over-voltage threshold greater than the DC bus voltage trigger 
level (B052 > B051) for proper operation.
(2) Once the power loss decelerati on function starts, it will complete and stop the motor even if 
input power is restored. In that case, it  automatically enables the Run mode again.
DC bus (V)
Output
Frequency
Under-voltage  level
B052
B051
B054
B053 t
t
0
0

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]  
						

							SJ7002 Inverter
Operations
and Monitoring
4–7
Connecting to PLCs and Other Devices
Hitachi inverters (drives) are useful in many types of applications. During installation, the 
inverter keypad (or other programming device) will  facilitate the initial configuration. After 
installation, the inverter will  generally receive its control commands through the control logic 
terminals or serial interface from another contro lling device. In a simple application such as 
single-conveyor speed control,  a Run/Stop switch and potentiomet er will give the operator all 
the required control. In a sophisti cated application, you may have a  programmable logic 
controller  (PLC) as the system controller with several connections to the inverter.
It is not possible to cover all the possible types  of application in this manual. It will be neces-
sary for you to know the electrical characteri stics of the devices you want to connect to the 
inverter. Then, this section and the following sections on I/O terminal  functions can help you 
quickly and safely connect those devices to the inverter.
CAUTION:   It is possible to damage the inverter or  other devices if your application exceeds 
the maximum current or voltage characteristics of a connection point.
The connections between the inverter 
and other devices rely on the electrical 
input/output characteri stics at both ends 
of each connection, shown in the 
diagram to the right. The inverter can 
accept either sourcing or sinking type 
inputs from an external device (such as 
a PLC). A terminal jumper configures 
the input type, connecting the input 
circuit  common to the supply (+) or (–). 
Detailed wiring examples are in  “
Using 
Intelligent Input Terminals” on page 4–
13. This chapter shows the inverter’s 
internal electrical  component(s) at each 
I/O terminal and how to interface them 
with external circuits.
In order to avoid equipment damage and 
get your applicatio n running smoothly, 
we recommend drawi ng a schematic of 
each connection between the inverter 
and the other devi ce. Include the 
internal components of each device in 
the schematic, so that it makes a 
complete circuit loop.
After making the schematic, then:
1. Verify that the current and voltage 
for each connection is within the 
operating limits of each device.
2. Make sure that the logic sense 
(active high or active low) of any 
ON/OFF connection is correct.
3. Verify inputs are configured 
correctly (sink/source) to interface 
to interface to any external devices (PLCs, etc.).
4. Check the zero and span (curve end points) fo r analog connections, and be sure the scale 
factor from input to output is correct.
5. Understand what will ha ppen at the system level if any pa rticular device suddenly loses 
power, or powers up after other devices.
5
3
1
7
6
4
2
8
Other device
Input
circuit
Output circuit
SJ7002 Inverter
Input
circuit
Output
circuit
Input
circuits
Inverter
Common
PLCPLC
P24
CM1
+
–
24VDCJumper Signal
Return
Signal
Return

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]  
						

							Connecting to PLCs and Other Devices
Operations
and Monitoring
4–8
Example Wiring 
DiagramThe schematic diagram below provides a gene ral example of logic connector wiring, in 
addition to basic power and motor  wiring covered in Chapter 2. The goal of this chapter is to 
help you determine the proper  connections for the various terminals shown below for your 
specific application needs.
U
V
W
Motor
R
S
T
Expansion Card #1
(optional)
Expansion Card #2
(optional)
T
R
R0
T0
Power source,  3-phase
P24
PLC
FW
8
3
2
1
Forward
Reverse
Intelligent inputs,  8 terminals
CM1
24VDC
TH
FM output 
monitor
Thermistor
H
O
O2
OI
L
AM
AMI
4 – 20mA
Analog GND
+–
+ –
-10 / 0 / +10 VDC 0 – 10VDC+
–
+10VDC
reference
100 Ω10k
Ω10k
Ω
+10VDC reference
P
PD
RB N
Brakingresistor
(optional)
SP
SN
RP
SN
RS-485 serial
communications
Jumper for
termination Send/
receive
100 Ω Intelligent relay output
(alarm function default)
Signals for expanded features, including 
encoder feedback, digital I/O, and
DeviceNet networking
Intelligent outputs,
5 terminals,
open-collector
CM2 11 12 13 14 15
Input
circuits
Output
circuits
FM
Braking unit
(optional)
AM output 
monitor
AMI output  monitor
Control
circuit
Recti- fier
Inverter
ConverterDC bus
+
–
+
–
2-wire jumper J51
Ferrite filter SJ700
2
AL0
AL2
AL1
NOTE:
 For the wiring of intel-
ligent I/O and analog inputs, 
be sure to use twisted pair / 
shielded cable. Attach the 
shield wire for each signal to 
its respective common termi-
nal at the inverter end only.
+ –
CM1
Default jumper position 
for –xFU/–xFF models 
(sourcing type inputs)
Default jumper position  for –xFE models
(sinking type inputs)
L1
L2
L3 T1
T2
T3
Type D grounding (200V class models);
Type C grounding (400V class models)
(models with 22kW capacity or 
less have built-in braking unit)

Phone: 800.894.0412   
						

							SJ7002 Inverter
Operations
and Monitoring
4–9
Specifications of 
Control and Logic 
ConnectionsThe control logic connector board is removable for wiring convenience as shown below (first, 
remove two retaining screws). The small connecto r to the left is for serial communications.
Specifications for the logic connection terminals are in the following table:
Alarm relay
Logic
inputs
Analog 
inputs Analog 
outputs Logic
outputs
HO2
CM2
1353114
764215
AL1
AL0AL2
11
12
8FMAM
OOILSPSNRPSN
PowerSerial
communications
FWTH
PLC
CM1
P24CM1AMI
Retaining screw locationsTerminal screw size is M3
Tightening torque is:
0.7 N-m (0.5 ft.-lb.) 
Maximum torque is:
0.8 N-m (0.6 ft.lb.) 
Te r m i n a l  N a m eDescriptionRatings and Notes
[P24] +24V power for inputs 24VDC supply, 100 mA max.
[CM1] +24V common Common for 24V su pply, [FW], [TH], inputs [1] to 
[8], and [FM]. (Note: Do not ground)
[PLC] Common for logic inputs Common for input terminals [1] to [8], jumper to  CM1 for sinking, jumper to P24 for sourcing
[CM2] Common for logic outputs Common for output terminals [11] to [15]
[1], [2], [3], [4], [5],  [6], [7], [8] Intelligent (programmable) 
discrete logic inputs 27VDC max. (use [P24] or 
an external supply refer-
enced to terminal [CM1]), 4.7k Ω input impedance
[FW] Forward/stop command 27VDC max. (use  [P24] or an external supply refer-
enced to terminal [CM1]), 4.7k Ω input impedance
[11], [12], [13],  [14], [15] Intelligent (programmable) 
discrete logic outputs Open collector type, 50mA max. ON state current, 
27 VDC maximum OFF state voltage
[TH] Thermistor input Reference to [C M1], min. thermistor power 100mW
[FM] PWM output 0 to 10VDC, 1.2 mA max.,  50% duty cycle
[AM] Voltage analog output 0 to 10VDC, 2 mA max.
[AMI] Current analog output 4-20 mA, nominal load impedance 250 Ω
[L] Common for analog inputs Sum of [O I], [O], and [H] currents (return)
[OI] Analog input, current 4 to 19.6 mA range, 20 mA nominal, 100 Ω input 
impedance
[O] Analog input, voltage 0 to 9.6 VDC range, 10VDC nominal, 12VDC  max., input impedance 10 kΩ
[O2] Analog input, voltage 2 –9.6 to 9.6 VDC range, ±10VDC nominal, ±12VDC  max., input impedance 10 kΩ
[H] +10V analog reference 10VDC nominal, 10 mA max.
[AL0] Relay common contact Contacts AL0–AL1, maximum loads:    250VAC, 2A; 30VDC, 8A resistive load
   250VAC, 0.2A; 30VDC, 0.6A inductive load
Contacts AL0–AL2, maximum loads:
   250VAC, 1A; 30VDC 1A max. resistive load
   250VAC, 0.2A; 30VDC, 0.2A max. inductive load
Min. loads: 100 VAC, 10mA; 5VDC, 100mA
[AL1] Relay contact, normally 
closed
[AL2] Relay contact, normally  open

Phone: 800.894.0412