Satec PM290 User manual

Se
PM290
Powermeter
Installation
and Operation
Manual
BG0208 Rev. A3

PM290 POWERMETER
Installation and Operation
Manual

i
LIMITED WARRANTY
The manufacturer offers the customer an 24-month functional warranty
on the instrument for faulty workmanship or parts from date of dispatch
from the distributor. In all cases, this warranty is valid for 36 months
from the date of production. This warranty is on a return to factory
basis.
The manufacturer does not accept liability for any damage caused by
instrument malfunction. The manufacturer accepts no responsibility for
the suitability of the instrument to the application for which it was
purchased.
Failure to install, setup or operate the instrument according to
the instructions herein will void the warranty.
Your instrument may be opened only by a duly authorized
representative of the manufacturer. The unit should only be opened in
a fully anti-static environment. Failure to do so may damage the
electronic components and will void the warranty.
NOTE
The greatest care has been taken to manufacture and calibrate your
instrument. However, these instructions do not cover all possible
contingencies that may arise during installation, operation or
maintenance, and all details and variations of this equipment are not
covered by these instructions.
For additional information regarding installation, operation or
maintenance of this instrument, contact the manufacturer or your local
representative or distributor.
IMPORTANT
Please read instructions contained in this manual before
performing installation, and take note of the following
precautions:
1. Ensure that all incoming AC power and other power sources
are turned OFF before performing any work on the instrument.
2. Check the labels on the side of the instrument before
connecting to the power source to ensure that your instrument is
equipped with the appropriate power supply voltage, input
voltages, currents, analog output and communication protocol for
your application.
2. Do not connect the instrument to a power source if it is
damaged.
3. Do not expose the instrument to rain or moisture.

ii
4. The secondary of an external current transformer must never
be allowed to be open circuit when the primary is energized.
Ensure that the current transformer wiring is made through
shorting switches and is secured using an external strain relief to
reduce mechanical strain on the screw terminals, if necessary.
5. Setup procedures must be performed only by qualified
personnel familiar with the instrument and its associated
electrical equipment.
6. DO NOT attempt to open the instrument under any
circumstances.
Modbus is a trademark of Modicon, Inc.
)Read through this manual thoroughly before connecting the
instrument to the current carrying circuits. During operation,
hazardous voltages are present on input terminals. Failure to
observe precautions can result in fatal injury and/or damage to
equipment.
BG0208 Rev. A3

iii
Table of Contents
Quick Start......................................................................... iv
1 Introduction................................................................... 1
2 Installation and Interfaces ........................................... 4
2.1 Mechanical Installation....................................................... 4
2.2 Electrical Installation .......................................................... 6
3 Setup.............................................................................. 14
3.1 Setup Procedure ................................................................ 14
3.2 Wiring Mode: CnF .............................................................. 16
3.3 Potential Transformer Ratio: Pt.......................................... 17
3.4 Current Transformer: Ct..................................................... 18
3.5 Maximum Power Demand Period: P.................................. 18
3.6 Maximum Ampere Demand Period: AP............................. 19
3.7 Memory Buffer: buF ........................................................... 20
3.8 Reset: rSt ........................................................................... 20
3.9 Baud Rate: br ..................................................................... 21
3.10 Communication Address: Add ........................................... 21
3.11 Handshake Mode: H.Sh..................................................... 22
3.12 Communication Protocol: CoP........................................... 22
3.13 Relays ................................................................................ 23
3.14 Analog Output: A (optional)................................................ 25
4 Data Display .................................................................. 28
4.1 Display Pages .................................................................... 28
4.2 Self-Test Diagnostics ......................................................... 29
4.3 RESET ............................................................................... 29
Appendix A: Technical Specifications............................ 30
Appendix B: Communication Cable Drawings .............. 35

iv
Quick Start
TYPICAL INSTALLATION
SW2

v
BASIC and COMMUNICATION PARAMETERS SETUP
( ∗ default setting)
Code Parameter Options Description
CnF Wiring mode 3OP 3-wire open delta using 2 CTs
4Ln 4-wire Wye using 3 PTs
3dir 3-wire direct connection using 2 CTs
4LL* 4-wire Wye using 3 PTs
Pt PT ratio 1.0∗- 6,500.0 Potential transformer ratio
Ct CT primary current 1-50,000A
(5∗)
Primary rating of the phase current
transformer
Ct.G Ground Leakage
CT primary current
1-50,000mA
(5000∗)
Primary rating of the ground leakage
current transformer (Option L only)
P Power demand
period
1, 2, 5, 10,
15*, 20, 30,
60, E
Length of demand period for power
demand calculations, in minutes.
E = external synchronization
A.dP Ampere demand
period
0-1800 s
(900*)
Length of demand period for ampere
demand calculations 0 = measuring
peak current
# Relay number 1, 2, 3 or 4 Relay setpoints
buF Buffer size nor∗, unSt No. of measurements for RMS
sliding averaging - 8 or 32
rSt Reset ON,OFF*Protects all reset functions if OFF
br Baud rate /
data format
110, 300, 600, 1200, 2400, 4800, 9600* bps/
7E (7 bits, even parity), 8E (8 bits, even parity), 8n*
(8 bits, no parity)
Add Address ASCII protocol: 0∗-99; Modbus protocol: 1∗-247
H.Sh Incoming flow
control
(handshaking)
nonE*
SOFt
Hard
No handshaking
Software handshaking (XON/XOFF
protocol)
Hardware handshaking (CTS
protocol)
CoP Communications
protocol and
interface standard
ASCI232
ASCI422
ASCI485
∗
bin232
bin422
bin485
Prnt232
ASCII protocol, RS-232
ASCII protocol, RS-422
ASCII protocol, RS-485
Modbus RTU protocol, RS-232
Modbus RTU protocol, RS-422
Modbus RTU protocol, RS-485
Printer mode
Pr Printout period 1*,2,5,10,15,20,
30,60 minutes
Time interval between successive
printouts

Chapter 1 Introduction 1
1 Introduction
1.
The PM290 is a 3-phase AC Powermeter specially designed to meet
the needs of users ranging from electrical panel builders to substation
operators. The PM290 performs all basic power measurements; Option
L provides ground leakage current measurements (instead of external
synchronization).
Measured Parameters
The PM290 measures and displays the following parameters:
Parameter PM290 Option L
True RMS voltage (3-phase or line-to-line)
• •
True RMS current per phase
• •
Active Power
• •
Apparent Power
• •
Reactive Power
• •
Active Power Maximum Demand
• •
Active Power Accumulated Demand
• •
Ampere Maximum Demand per phase
• •
Apparent Power Maximum Demand
• • 1
System Power Factor
• •
Active Energy (Consumption)
• •
Returned Energy
• •
Reactive Energy
• •
Frequency
• •
Unbalanced Current (Zero Sequence) - for 4
wire system
• •
Ground Leakage Current (Option L)
•
External Synchronization Input
•
1 This parameter can be read only via Modbus communications.
Control and Alarm Relays
Four programmable relays provide alarms, control and load shedding.
Any combination of setpoints listed below can be assigned to any relay.
See Section 3.13.
• High current • High apparent power
• High voltage • High reactive power
• Low voltage • Low power factor
• High active power accumulated demand
• High unbalanced current (zero sequence) or
High ground leakage current (Option L)

2 Chapter 1 Introduction
Communications Connection (optional)
Connection to a printer, computer or central control room is enabled by
an RS-232/RS-422/RS-485 communications port that can operate at
baud rates of up to 9,600 bps. The RS-422/RS-485 port can operate in
multi-drop mode, permitting the connection of up to 32 instruments to a
single communications line. In the printer mode, the Powermeter
provides direct output of measurement parameters in printable format.
See Section 2.2.9 for pinouts and Appendix C for cable drawings.
Analog Output (optional)
One optional internal analog output is available for the following
measured values:
• Voltage (3-phase or line-to-line) • Active power
• Current (3-phase or line-to-line) • Apparent power
• Active power accumulated demand • Reactive power
• Power factor • Frequency
An external power supply (15-30VDC,24 VDC nominal) is required.
See Section 2.2.8 for connection.
If more than one analog output is desired, up to two AX-8 analog
expanders are available, providing up to 12 analog outputs. Contact
your distributor for purchasing AX-8 units.
Digital Input
One optically isolated digital input is provided for external
synchronization of power demand period. See Typical Installation on
page iv for connection.
Ground Leakage (Option L)
Option L provides ground leakage current measurements for
monitoring and alarm setting. A special ground leakage current
transformer (secondary current 5 mA) is required. See Section 2.2.10
for connection.

Chapter 1 Introduction 3
Getting Started
Connect the Powermeter to a suitable power supply. The Powermeter
will initiate a series of self-tests. Upon completion of the self-tests, all of
the front panel LEDs will light up for one second and indicate a one-
digit diagnostic code. An ‘8’ represents normal power up. If a different
diagnostic code constantly appears when you apply power to the
instrument, contact your local distributor.
The Front Panel
• Select is used to enter the setup mode
from the default monitoring mode; it is also
used to define the setup parameters (see
Chapter 3, Initial Setup)
• Enter/Reset is used to
reset measured values (if in
monitoring mode) or to ente
r
setup parameter values (if in
setu
p
mode
)
• Up/Down arrow
keys are used to
scroll pages
forward/backward

4Chapter 2 Installation and Interfaces
2 Installation and Interfaces
2.
2.1 Mechanical Installation
Figure 2-1 Front Panel Mounting (standard)

Chapter 2 Installation and Interfaces 5
Figure 2-2 Rear Mounting

6Chapter 2 Installation and Interfaces
2.2 Electrical Installation
2.2.1 Dip Switches
Figure 2-3 Dip Switches (Rear View)
Communications (see section 2.5):
RS-232: switches 1-4 ON, switches 5-8 OFF;
RS-422/RS-485: switches 1-4 OFF, switches 5-8 ON.
Setup (see Chapter 3): switch 9 ON = enable, OFF = disable
Page scrolling: switch 10 ON = stay at current page, OFF = return to
page 1 after 30 seconds.
Analog Expander: switch 2 ON = enabled, OFF= disabled (in this case
the internal analog output remains available).

Chapter 2 Installation and Interfaces 7
If the instrument is installed in a harsh environment with potential for
electromagnetic impulses from heavy switch gears, motors or lightning,
then it is mandatory to use the EMI/RFI suppression cores provided
with the instrument, connected to the power supply and communication
terminals, as shown in Figure 2-4.
Figure 2-4 Use of Suppression Cores
2.2.2 Power Source Connection
AC power supply: connect the live line of the power source to terminal
14 and the neutral to terminal 13.
DC power supply: connect the positive supply wire to terminal 14 and
the negative wire to terminal 13 (see Typical Installation on page iv).
2.2.3 Voltage Input Connections
660V Input: Direct Connection
Wiring diagrams for these are provided in Figures 2.5, 2.7, and 2.9.
660V Input: Using Potential Transformers
Wiring diagrams for applications where potential transformers (PT) are
used are provided in Figures 2-6 and 2-8.
120V Input
Instruments with 120V input (Option U) must be wired via potential
transformers. Wiring diagrams are provided in Figures 2-6 and 2-8.

8Chapter 2 Installation and Interfaces
2.2.4 Current Input Connections
See Typical Installation on page iv for current input connections.
)All CTs must be connected in the correct order and with the
correct polarity as shown in the wiring diagrams for the
instrument to operate properly. If the instrument displays a
power factor of zero or close to it, or if power readings show
unreasonable values, this may indicate a reversal of polarity
of the CT connections.
2.2.5 Ground Connection
Connect the instrument chassis ground to the switchgear earth ground
using dedicated wire greater than 2mm2/14AWG. See Typical
Installation on page iv for ground connection.
2.2.6 Wiring Configurations
There are 5 possible wiring configurations, illustrated in Figures 2-5
through 2-9:
No. Wiring Configuration Wiring Mode
1) 3-wire direct connection using 2 CTs 3dir
2) 3-wire open delta connection using 2 PTs, 2 CTs 3OP
3) 4-wire WYE direct connection using 3 CTs 4L-n or 4L-L
4) 4-wire WYE connection using 3 PTs, 3 CTs 4L-n or 4L-L
5) 4-wire grounded delta connection using 3 CTs 4L-n or 4L-L
L-n = line-to-neutral; L-L = line-to-line voltage readings; voltage readings in
3-wire configurations always represent line-to-line voltages

Chapter 2 Installation and Interfaces 9
LOAD
12
L
K
K
96 7
11 10
4
3
85
1
2
-
-
-
-
c99-0 2015
LINE
LINE
LINE
1(A)
2(B)
3(C)
Sh o rtin g
Sw itche s
+
+
++
V
1
V
2
V
3
Currents
Vo ltage s
13
II
Figure 2-5 3-wire Direct Connection Using 2 CTs - Wiring Mode 3dir
LOAD
12
L
K
K
96 7
11 10
4
3
85
1
2
-
-
--
--
LINE
LINE
LINE
1(A)
2(B)
3(C)
Shorting
Sw itche s
+
+
+ +
+ +
++
V1V2VV
3N
12 3
II I
Currents
Vo lt a ge s
Figure 2-6 3-Wire Open Delta Connection Using 2 PTs, 2 CTs -
Wiring Mode 3OP
(Note the connection between terminals 5 and 11)
99-02016

10 Chapter 2 Installation and Interfaces
LOAD
12
L
L
K
K
K
96 7
11 10
4
3
85
1
2
-
--
--
-
c99 -0 2018
LINE
LINE
LINE
1(A)
2(B)
3(C)
N
Shorting
Switches
+ +
+
+
++
V
1
V
2
VV
3N
Currents
Vol tage s
12 3
II I
Figure 2-7 4-Wire Wye Direct Connection Using 3 CTs -
Wiring Mode 4L-n/4L-L
LOAD
12
L
L
K
K
K
96 7
11 10
4
3
85
1
2
-
--
---
c99-02019
LINE
LINE
LINE
1(A)
2(B)
N
3(C)
Shorting
Switches
+
+ + +
+ + +
+
+
+
++
V
1
V
2
VV
3N
Currents
Vo lt age s
12 3
II I
Figure 2-8 4-wire Wye Connection Using 3 PTs, 3 CTs -
Wiring Mode 4L-n/4L-L

Chapter 2 Installation and Interfaces 11
2. Line to lin e voltages: 240V; 240V; 240V.
VOLTAGES DISPLAYED:
240V
120V
240V
120V
208V
Power Transformer
delta connection
208VA C
240VA C
240VAC
N
*
*
*
120 VAC
3
120 VA C
240VA C
2
1
Shorting
Swit ches
LOAD
K
+-
L
K
+-
L
K
+-
L
V
1
V
3
2
V
N
V
+-
1
I
+
2
I
-
3
I
N
LINE 1
LINE 2
LINE 3
(A)
(B)
(C)
L
L
L
(B)
(A)
(C)
L
2
*
(B)
1
L(A)
*
L
3
*
(C)
N
+-
CT
7
118
46
10 12
9
1 3
25
01-01012
Figure 2-9 4-wire Grounded Delta Connection Using 3 CTs -
Wiring Mode 4L-n/4L-L
2.2.7 Relay Output Connections
Use relays #1, 2 and 4 for setpoints or KYZ pulsing. These relays do
not energize on power up.
Use relay #3 for alarm/trip setpoint. This relay energizes on power up
and de-energizes on trip condition.
Figure 2-10 illustrates wiring connections for the relays.
18 20 2221 23
01-01009-3
262524 27
15
0 ~
13 14 16 17
1
R
2
R R
3
R
4
Figure 2-10 Relay Output Connections
(Note: Power supply shown switched on)

12 Chapter 2 Installation and Interfaces
2.2.8 Analog Output
The Analog Output requires a galvanically isolated external power
supply. See Figure 2-11 for connections: negative to terminal 15 and
positive to terminal 16. In certain industrial applications, a circuit may
be required to protect against accidental shorts.
FUSE
R
D1 C1 VR1
To terminal #16
To terminal #15
D1=1N4002
C1=0.1MF/50V
VR1=250Vrms
FUSE=100mA(S.B.)
L
+-
24V
Figure 2-11 Analog Output Connection
2.2.9 Communications
Connector Pinout
The serial interface connector is a standard D-type 9-pin plug-in,
located at the top center of the back of the instrument. Tables 2-1 and
2-2 list the pinout of the connector.
Table 2-1 RS-232 Pinout DIP Switch Block
Pin Name Function
1 Gnd Ground (common)
2 TxD Transmit Data
3 RxD Receive Data
4 DTR Data Terminal Ready
5 DSR Data Set Ready
Table 2-2 RS-422/RS-485 Pinout DIP Switch Block
Pin Name Function
2 TxD+ + Transmit Data
3 RxD+ + Receive Data
6 TxD - - Transmit Data
7 RxD - - Receive Data
For RS-485 communications, connect together pins 2-3 (TXD+ and
RXD+), and pins 6-7 (TXD- and RXD-).
For cable drawings, refer to Appendix B.

Chapter 2 Installation and Interfaces 13
2.2.10 Ground Leakage (Option L)
Ground leakage connection is at terminals 26 and 27.
ANALOG OUTPUT
R
KWH
1-200
AC or DC
POWER SUPPLY
24V
-
R
+
.
.
~0
U
13 14 1615 17
01-01009-2
LEAKAGE
CURRENT TRANSFOR
M
GROUND
SHORTING
SWITCH
R
4
R
21
R
3
A
C
N
B
KVARH
W
1
3
2
L
L
L
1-200
1918 20 2221 23 2524 26 27
Figure 2-12 Ground Leakage Current Transformer Connection