Pilot Communications SPM32 User manual

SPM32 Multifunctional Power Meter
SPM32 Multifunction Power Meter
Installation & Operation Manual
V1.0

1
Danger and warning!
This device can be installed only by professionals.
The manufacturer shall not be held responsible for any accident caused
by the failure to comply with the instructions in this manual.
Risks of electric shocks, burning, or explosion
zThis device can be installed and maintained only by qualified people.
zBefore operating the device, isolate the voltage input and power supply
and short-circuit the secondary windings of all current transformers.
zPut all mechanical parts, doors, or covers in their original positions before
energizing the device.
zAlways supply the device with the correct working voltage during its
operation.
Failure to take these preventive measures could cause damage to
equipment or injuries to people

2
CONTENTS
1. General Information .............................................................................4
2. Order Information.................................................................................5
3. Dimension and Installation..................................................................6
3.1 Dimension .................................................................................... 6
3.2 Installation .................................................................................... 6
4. Display and Keys-press Operation.....................................................7
4.1 Display instruction ........................................................................ 7
4.2 Keys ............................................................................................. 7
4.3 Real-time data display procedure................................................. 8
4.4 Setting menu and procedure ........................................................ 9
5. Measuring Capability .........................................................................11
5.1 Real-time basic electrical parameters ........................................ 11
5.1.1 Voltage ............................................................................ 11
5.1.2 Current ............................................................................ 12
5.1.3 Frequency ....................................................................... 12
5.1.4 Power .............................................................................. 13

3
5.2 Demand value ............................................................................ 13
5.3 Energy (kWh, kvarh)................................................................... 14
5.4 Harmonic parameters................................................................. 14
5.5 Unbalance parameters ............................................................... 15
5.6 Alarm setpoint............................................................................. 16
5.6.1The alarm object and type................................................ 16
5.6.2 Setpoint delay time.......................................................... 17
5.6.3 Alarm output .................................................................... 18
5.6.4 Example .......................................................................... 18
6. Input/output Characteristics .............................................................19
6.1 Relay output ............................................................................... 19
6.2 Digital input................................................................................. 20
7. Technical Specification .....................................................................21
8. Communication protocol...................................................................23
9. Maintenance and Trouble Shooting .................................................24
10. Terminals Definition.........................................................................27
11. Typical Connection ..........................................................................29

SPM32 Multifunctional Power Meter
1. General Information
SPM32 Three Phase Multifunction Power Meter is designed for monitoring and
displaying all kinds of electricity parameters in high/ low voltage system to
650kV. It has one RS485 port and support Modbus-RTU communication
protocol. .
SPM32 provide the main function as below:
zReal-time measuring data, true RMS
(Three phase voltage, current, active power, reactive power, apparent
power, power factor, frequency, active energy, reactive energy)
zDemand calculation
(Demand and peak demand for current, total active power)
zOptional 2 digital input
zOptional 2 relay output
zAlarm function
z2~31th individual harmonic and THD
zOne RS485, Modbus-RTU protocol

5
2. Order Information
SPM32 - □- □
①②
①: Optional function
R Two relay output
S Two status input
②: Rated input voltage/ current
V1 5A
V2 1A
Example: SPM32-SR-V1, it means the device provides basic measuring
function, one RS485 port, 2 digital input, 2 relay output. Rated input current 5A.

6
3. Dimension and Installation
3.1 Dimension
unit：mm
3.2 Installation
unit：mm

4.
D
4.1
D
1: M
a
2: Pr
o
3: Un
4: Da
t
Desc
r
(1) If
t
when
4.2
K
Note:
D
isplay and
D
isplay instr
u
a
in menu, the bla
o
mpt of commun
it of paramete
r
.
t
a display area.
r
iption:
t
here is no key o
the backlight is
K
eys
In a different int
e
Sibling menu
s
Switching sibli
n
Confirm/ Exit
Keys-pres
s
u
ction
ck flashing is th
e
ication .
peration within
6
lit until the butto
n
e
rface, the sam
e
s
witch / decreas
e
n
g menu to sub
m
7
s
Operatio
n
e
current menu.
6
0s, the backligh
t
n
operation agai
n
e
keys have diffe
e
the value
m
enu / move the
n
t
automatically t
u
n
.
rent functions.
cursor to right
u
rns off,

8
4.3 Real-time data display procedure
Volt(ph-ph)
Frequency
Zerosequencycurrent
3phasereactivepower
3phaseapparentpower
Totalpower
3phasepowerfactor
Totalpowerfactor
Imp.kWh/kvarh
Exp.kWh/kvarh
Max.demandforI
DemandforP
Max.demandforP
DemandforPtot
Max.demandforPtot
THDforI
3rdharmonicforV
Main menu Sub menu
Volt (ph-N)
Current
Active power
Total energy
Demand current
THD for V
Alarm info
Status input
Relay output
5thharmonicforV
7thharmonicforV
3rdharmonicforI
5thharmonicforI
7thharmonicforI
9thharmonicforV
9thharmonicforI

9
4.4 Setting menu and procedure
**
PASS
CT
PT
MODE
PASS
CT
PT
MODE
PASS
CT
PT
MODE
1
100
PASS
CT
PT
MODE
4Y
ADDR
Baud
ClrE
ClrD
1
1. Password (PASS)
Default：01
Range: 00-99
2. CT ratio(CT)
Range: 1～10000
e.g.
If CT spe. is
200A/5A,
set CT ratio = 40
3. PT ratio(PT)
Range: 1~10000
( non decimal)
or 0.01～650.00
( two decimal)
e.g.
If PT spe. is 11kV/110V,
set PT ratio = 100
4. Wiring mode
(MODE)
4Y: 3 phase 4 wire
3D: 3 phase 3 wire
5. Communication
address ( ADDR)
Range：1~247
6. Baudrate (Baud)
Range: 4800, 9600 bps
7. Clear energy (ClrE)
Select “YES” to clear energy
8. Clear demand (ClrD)
9. DEMO
"YES" to show dummy value
"NO" to show normal value.
10. Version info (INFO)
HV: Hardware version
( can not set)
SV: Software version
Demo
InfoSV1.0.0
HV1.0.0
Demo
InfoNO
ADDR
Baud
ClrE
ClrD
NO
NO
ADDR
Baud
ClrE
ClrD
9600
ADDR
Baud
ClrE
ClrD
Select “YES” to clear demand

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Remark
1. Input super password “99”, the device will display the original password.
2. In 3-phase 3-wire mode, the device displays total power only (total P, total Q,
total PF). Per phase power value will be 0.
3. The optional relay function only can be set via Modbus communication
4. In case the programmed data is invalid, the setting is not successful. The
device restores the original parameters.
5. There is no description in this manual for other customized function.

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5. Measuring Capability
5.1 Real-time basic electrical parameters
SPM32 measures basic parameters: voltage, current, power, and frequency etc.
Real-time metering Measuring range
Current
Single phase 0 ~ 65,000A
Zero sequence 0 ~ 65,000A
Unbalance (%) 0 ~ 100%
Voltage
Line-line 0 ~ 650kV
Line-neutral 0 ~ 650kV
Active power/Reactive power /Apparent power
Single phase 0 ~ ± 9999MW/var/VA
Total 0 ~ ± 9999MW/var/VA
Power factor
Single phase -1.000 ~ +1.000
Total -1.000 ~ +1.000
Frequency
35 ~ 65Hz 35 ~ 65Hz
5.1.1 Voltage
SPM32 maximum measurement for phase voltage is 400V (PT secondary). In
3-phase 3-wire system, maximum measurement for line voltage is 500V (PT
secondary). Users should be noted this to prevent internal measuring circuit
saturation, avoid inaccurate measurements.

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The device support 3-phase 3-wire and 3-phase 4 mode. Users can set the
Wiring Mode by keys or communication.
Note: After change the wiring mode, users must clear energy value to 0
5.1.2 Current
SPM32 must be connected by CT to measure current. CT secondary rated
output required to meet the input requirements of SPM32 rated current (5A or
1A). When using an external CT, wiring should prevent open, otherwise it will
generate a higher voltage in the secondary role. In the primary excitation effect,
causing no casualties or damage to equipment.
Measuring range: 0 ~ 6.5 A (CT secondary).
CT ratio setting range: 1~10000
Users should be noted above range to prevent internal measuring circuit
saturation, avoid inaccurate measurements.
5.1.3 Frequency
In different wiring mode, the device measures the frequency from different
channel.
In 3-phase 3-wire, it measures frequency signal from Line 1-2
In 3-phase 4-wire, it measure frequency signal from Line 1 voltage input. In
case Line 1 voltage loss, it measures from Line 3 voltage input. In case both
Line 1 & 3 loss, it measures from Line 2 voltage input.

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5.1.4 Power
SPM32 calculates per phase and total active power/ reactive power/ apparent
power/ power factor.
Power measuring range: 0 ~ ± 9999MW/var/VA (per phase & total)
Power factor measuring range: -1.000 ~ +1.000 (per phase & total)
Note
1. The active power/ reactive power/ power factor is signed value
2. When wiring, users should pay attention to the phase sequence of
voltage and current. Otherwise, it may cause wrong measuring data.
Besides, it is necessary to connect the CTs terminals correctly;
otherwise there will be negative power value.。
5.2 Demand value
Demand value is accumulated value during a specified period divided by the
length of that period. SPM32 adopts Fix Block to calculate the demand. Fix
interval is 15 minutes.
SPM32 provides the following demand data and measuring ranges:
Demand reading Measuring range
Demand current
Per phase current 0 ~ 65,000A
Max. peak demand 0 ~ 65,000A

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Demand active power
Per phase power
To t a l p o we r
0 ~ ± 9999MW
0 ~ ± 9999MW
Max. peak of per phase
Max. peak demand of total power
0 ~ ± 9999MW
0 ~ ± 9999MW
The figure below describes demand calculation:
5.3 Energy (kWh, kvarh)
SPM32 accumulates energy parameters: imp. kWh, exp. kWh, imp. kvarh, exp.
kvarh and kVAh. If the value reaches to maximum ( 99,999,999.9 kWh), it will
automatically turn over, and re-start accumulate from 0.
Note: the kVAh value only can be read via Modbus communication.
5.4 Harmonic parameters
SPM32 measures voltage and current harmonic up to 31st, and calculates THD,
The data of harmonics are given according to the percentage of fundamental

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harmonics and have one digit after the decimal point. That is to say, when the
value of the fundamental harmonic is fixed at 1000, it is 100.0% of the effective
value of the fundamental harmonic; others are by analogy.
THD refers to the total of higher harmonics except fundamental harmonics, and
it is calculated according to the following formula:
∑
=
=
=
ni
ii
X
THD 2
2
i: Harmonic order.
i
X: Percentage of the effective value of each harmonic to that of
the fundamental harmonic.
n: Highest harmonic order, which should be 31 here.
Note
SPM32 LCD display 3rd/ 5th / 7th / 9th harmonic and THD, other order
harmonic can be read via Modbus communication.
5.5 Unbalance parameters
SPM32 can measure current unbalance, the unbalance is calculated:
XmaxXmin-XmaxXunbal ）（=×100％
Xunbal — The unbalance of the voltage or current
Xmax — Maximum value of the three-phase voltage or current
Xmin — Minimum value of the three-phase voltage or current

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5.6 Alarm setpoint
SPM32 with user definable valued system which can monitor the electrical
parameters of the instrument and set the action.
5.6.1The alarm object and type
Object Alarm triggered remark
The upper limit of
voltage
Max. primary voltage > Upper limit
In 3P4W, the value is voltage ph-N
In 3P3W, the values is voltage ph-ph
(Setting range: 20.00V~650,000.00V)
Setting value to
0 means unable
alarm.
The lower limit of
voltage
Min. primary voltage < Lower limit
In 3P4W, the value is voltage ph-N
In 3P3W, the values is voltage ph-ph
(Setting range: 20.00V~650,000.00V)
If Secondary voltage <10V, the device
will think it is phase loss alarm. It is not
alarm for under voltage.
Setting value to
0 means unable
alarm.
The upper limit of
current
Max. primary current > Upper limit Setting value to
0 means unable
alarm.
The lower limit of
current
Min. primary current (≠0) < Lower limit
The upper limit of Metering frequency >Upper limit Setting value to

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frequency 0 means unable
alarm.
The lower limit of
frequency
Metering frequency (≠0) < Lower limit
The upper limit of
power
Total active power (primary) > Upper
limit
Setting value to
0 means unable
alarm.
Voltage phase
loss
Any one phase or 2 phase voltage
(secondary) <10V
Select ON/OFF
DI 1 switch off Digital input 1 channel switch position
OFF
Select ON/OFF
The upper limit of
demand power
Demand Ptot (primary) > Upper limit Setting value to
0 means unable
alarm.
5.6.2 Setpoint delay time
Alarm condition: When the monitoring object exceeds the limitation, the delay
duration time also is required to active the alarm. Throughout the delay time, if
the object is within the return limits, then the alarm setpoint is not activated.
The unit of delay time is seconds (s), setting range: 0~120 (s).
If the delay time is 0, it means that once the monitoring object exceeds the limit,
the alarm setpoint generated immediately.

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5.6.3 Alarm output
When the alarm occurs, the alarms type can also be read from LCD or via
Modbus communication. If the alarm associated relays, the relay generates
action. Once the alarm disappears, the ALARM light will be off, the relay will be
reset.
5.6.4 Example
If user want to monitor over current and over voltage, suppose:
voltage exceeds 240V, delay time is 80s, or
current exceeds 200A, delay time is 10s, then the relay 1 alarm
The setting as below:
Parameter Setting value
Voltage upper limit 240V
Voltage delay time 80s
Current upper limit 200A
Current delay time 10s
Relay 1 mode Alarm
Relay 1 object All

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6. Input/output Characteristics
6.1 Relay output
SPM32 provides optional two relay output, relay specification is 250Vac/5A. It
can be used with the instrument's alarm setpoint system, to monitor relative
electrical parameters whether there is exceed limit, and thus output breaker
reasonable action ( Please refer to the chapter of the alarm setpoint for more
details).
Or, the relay can be set to remote control mode. Users can remote control the
relay according to project requirement.
SPM32 provides two relay operation modes. The action of relay is different in
these two modes. The default control mode of this product is remote control.
Users can modify to alarm control through panel relay setting or through
communication.
◆ Remote control (external) - The relay is controlled by a PC or PLC by
using commands through communication.
◆ Alarm Control (internal) - If there is an alarm generated, the relay on the
action, you can refer to specific alarm setpoint alarm.
◆ When setting as Alarm mode, Alarm Subject including All, Voltage, Current,
Frequency, Total active power, Voltage Phase lose, or DI 1 off, Demand
power etc