Pilot Communications SPM33 User manual
V2.0
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
SPM33 Multifunctional power meter
Contents
1.General Information......................................................................................
2. Order information ........................................................................................
3. Dimension and Installation .........................................................................
3.1 Dimension ...........................................................................................3
3.2 Installation ...........................................................................................3
4. Operation......................................................................................................
4.1 Real-time measurement data structure ...............................................4
4.2 The graphic display .............................................................................5
4.3 Status Inquiry ........................................................................... .........6
4.4 Key Description .................................................................... .............6
4.5 Parameter settings ............................................................... ............. 7
5. Measuring Capability. ...............................................................................
5.1 Real-time basic electrical parameters ...............................................13
5.1.1 Voltage...................................................................................14
5.1.2 Current...................................................................................14
5.1.3 Frequency..............................................................................15
13
4
3
1
2
......
SPM33 Multifunctional power meter
5.2 Demand Parameters .........................................................................1
5.3 Energy parameters............................................................................17
5.4 Harmonic parameters........................................................................17
5.5 Unbalance parameters ......................................................................18
5.6 Alarm Setpoint...................................................................................18
5.6.1 Alarm action condition............................................................20
5.6.2 Alarm Output..........................................................................21
6. Input/output Characteristics ....................................................................
6.1 Relay output ......................................................................................21
6.2 Status input .......................................................................................23
6.3 Dual Source kWh measurement .......................................................24
7. Technical Datasheet ..................................................................................
8. Communication protocol ..........................................................................
8.1. Introduction ......................................................................................27
8.2. Detailed Description of the SPM33 Modbus Protocol.......................28
8.2.1. SPM33 Modbus Protocol Rules............................................28
8.2.2. Modes of Transmission.........................................................29
8.2.3. Description of the Modbus Packet Structure.........................29
27
25
21
5
SPM33 Multifunctional power meter
8.2.4. Abnormal Responses............................................................31
8.2.5. Broadcast Packets................................................................32
8.3. Packet Communication ....................................................................33
8.3.1 Read the Relay Output Status (Function Code 01H) .............33
8.3.2. Read Holding Registers (Function Code 03H)......................35
8.3.3 Relay Control (Function Code 05H).......................................36
8.3.4. Preset Multiple Registers (Function code 10H).....................37
8.4. Calculating the CRC-16 Error Check Field.......................................38
8.5. Description of SPM33 Registers.......................................................42
8.6 Description of Data Types .................................................................42
8.6.1 Real-time data register list .....................................................43
8.6.2 List of demand data registers.................................................52
8.6.3 List of harmonic data registers...............................................55
8.6.4 List of configuration registers.................................................58
8.6.5 Register for command and clear energy................................64
8.6.6 List of device information registers ........................................65
9. Maintenance and Trouble Shooting .........................................................
10. Appendix 1 ...............................................................................................69
66
1. General Information
SPM33 three phase multi-function power meters, mainly apply to Low Voltage Distribution
System, which voltage below AC400V (L-N), it can through RS485/ Modbus communication
to manage instrument of network, and achieve automatic control.
The main characteristics of SPM33 are as follows:
Real-time parameter measurement
(Three-phase voltage, current, active power, reactive power, apparent power, power factor,
frequency, active energy, reactive energy, and other combined electrical parameters
measurement)
Demand measurement
(Phase current demand, sub-phase active demand, total active demand, the maximum
current demand, maximum total active demand, three phase reactive power, total reactive
power, three phase apparent power, total apparent power demand, save their maximum
value.)
2 active status inputs
2 relay outputs（optional）
Alarm function
Up to the 31st harmonic measurement, phase voltage and current harmonic content
(2 to 31),THD
1 RS485 communications, Modbus-RTU protocol
Phase sequence adjustment
Support Dual-source kWh measurement
1
2. Order information
SPM33 - □- □
①②
①：Feature selection
R Two relay alarm output
②：Rated identify measurement parameters
V1 3×220/380V, 5A
V2 3×220/ 380V ,1A
Example: SPM33-R-V1: the low-voltage three-phase multifunction power meter,
rated measuring 220/380V 5A, with standard 2 status inputs, optional 2 relay
alarm output.
2
3. Dimension and Installation
3.1 Dimension unit：mm
3.2 Installation
unit：mm
3
COM ALARM
96.0
96.0
69.8 89.50
80.5
89.5
SPM33
90.0
+0.5
-0.0
90.0
+0.5
-0.0
4. Operation
4.1 Real-time measurement data structure
（1）Real-time measurement data display by the form of main menu、submenu：
page button of main menu：page button of submenu：
（2）Menu tree diagram:
①Can flip the main menu by press .
②Can flip the submenu which under the main menu, by press .
4
4.2 The graphic display
1 : Prompt of the currently displayed page；
2：Prompt display page number；
3：Status prompt of DI/DO ；
4：Data display area；
5：Energy display area；
6：The secondary menu prompt；
7：Prompt under a main menu；
Description:
(1) If there is no key operation within 60s, the backlight automatically turns off,
when the backlight is lit until the button operation again.
(2) Status prompt of DI/DO displays the current status of DI / DO ,each circle
represents a DI or DO signal, when DI signal or relay is closed, the
corresponding circle is solid; conversely, was hollow.
Phase U 1/8
IL-L
34379.7 kWh
A
B
C
kWh
V
V
V
2200
.
2200
.
2200
.
6
1
2
3
4
5
7
DO oo
DI oo
5
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