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ZL0116-0A 

Page 11 of 26 

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Installation Guide

Power Monitoring

E50B1A, E50C2A, E50C3A

TM

Solid State Output

The E50xxxA have one normally open (N.O.) KY Form A output and one normally closed (N.C.) output.* One is dedicated to energy 
(Wh), and the other to Alarm. The E50B1A also provides an additional N.O. reactive energy (VARh) contact. See the Setup section 
for configuration information.

~

=

~

=

≤ 100 mA

≤ 100 mA

~

=

≤ 100 mA

Alarm

Energy

Output

+         –         S

LOAD

LOAD

LOAD

Power Source

3-30 VDC
6-30 VAC

Power Source

3-30 VDC
6-30 VAC

Over-Current Protective
Device** (not supplied)

Power Source

3-30 VDC
6-30 VAC

E50B1A only

The solid state pulse outputs are rated for 30VAC/DC nom.
Maximum load current is 100mA at 25°C. Derate 0.56mA per °C above 25°C.
* While the relay used for the Phase Loss contact is Normally Closed (contacts are closed when the meter is not powered), closure indicates the presence of an 
alarm; either loss of phase, when the meter is powered, or loss of power when the meter is not. The contacts are open when the meter is powered and no phase 
loss alarm conditions are present
** The over-current protective device must be rated for the short circuit current at the connection point.

Main Menu

IEC

IEEE

Description

D

D

Demand

MAX

M

Maximum Demand

P

W

Present Real Power

Q

VAR

Present Reactive Power

S

VA

Present Apparent Power

A

A

Amps

UAB, UBC, UAC

VAB, VBC, VAC

Voltage Line to Line

V

VLN

Voltage Line to Neutral

PF

PF

Power Factor

U

VLL

Voltage Line to Line

HZ

HZ

Frequency

KSh

KVAh

Accumulated Apparent 

Energy

KQh

KVARh

Accumulated Reactive 

Energy

KPh

KWh

Accumulated Real Energy

PLOSS

PLOSS

Phase Loss

LOWPF

LOWPF

Low Power Factor Error

Main Menu

IEC

IEEE

Description

F ERR

F ERR

Frequency Error

I OVR

I OVR

Over Current

V OVR

V OVR

Over Voltage

PULSE

PULSE

kWh Pulse Output Overrun 

(configuration error)

_PHASE

_PHASE

Summary Data for 1, 2, or 3 

active phases

ALERT

ALERT

Diagnostic Alert Status

INFO

INFO

Unit Information

MODEL

MODEL

Model Number

OS

OS

Operating System

RS

RS

Reset System

SN

SN

Serial Number

RESET

RESET

Reset Data

PASWD

PASWD

Enter Reset or Setup 

Password

ENERG

ENERG

Reset Energy Accumulators

DEMND

DEMND

Reset Demand Maximums

User Interface (UI) 
Menu Abbreviations 
Defined

The user can set the display mode to either IEC or IEEE notation in the SETUP menu.

Summary of Contents for E50B1A

Page 1: ...to radio communications This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must...

Page 2: ...38400 baud Modbus RTU MECHANICAL CHARACTERISTICS Weight 0 62 lb 0 28 kg IP Degree of Protection IEC 60529 IP40 front display IP20 Meter Display Characteristics Back lit blue LCD Terminal Block Screw...

Page 3: ...TM Table of Contents Dimensions 4 Data Outputs 4 Product Diagram 5 Display Screen Diagram 5 Installation 6 Supported SystemTypes 7 Wiring Symbols 7 Wiring 8 Control Power Diagrams 9 Quick Setup Instru...

Page 4: ...figurable for CT PT ratios system type and passwords Diagnostic alerts Current 3 phase average Volts 3 phase average Current by phase Volts by phase Line Line and Line Neutral Power Real Reactive and...

Page 5: ...only CONTROL POWER 0 1A 50 60 Hz A B C N 1 2 A B C Alarm Energy NC NO S OUTPUT IA IB IC Phase Loss Alarm Pulse VA VB VC Neutral Earth Control Power Output varies by model UL 90V L N 600V L L CE 90V L...

Page 6: ...ays on standard 35 mm DIN rail or screw mounted to the interior surface of the enclosure A DINRailMounting 1 Attach the mounting clips to the underside of the housing by sliding them into the slots fr...

Page 7: ...in a particular System Type display as on the User Interface or as QNAN in the Modbus registers CTs Voltage Connections SystemType Phase Loss Measurements Wiring Diagram Number of wires Qty ID Qty ID...

Page 8: ...ions may cause injury death or equipment damage WARNING Wiring N L1 X2 X1 White Black A B C N A B C Diagram1 1 PhaseLine to Neutral2 Wire System1CT Diagram2 1 PhaseLine to Line2 Wire System1CT L1 L2 X...

Page 9: ...heControlPowerTransformermaybewiredL NorL L Outputto meetmeterinputrequirements DCControlPowerfrom125VDCto300VDC ULandCEmax FuseRecommendations Keep the fuses close to the power source obey local and...

Page 10: ...aud rate c to the PAR screen Use the or buttons to select the parity d back to the S COM screen 6 to the S CT Set Current Transducer screen If this unit does not have an RS 485 port this will be the f...

Page 11: ...arm either loss of phase when the meter is powered or loss of power when the meter is not The contacts are open when the meter is powered and no phase loss alarm conditions are present The over curren...

Page 12: ...s A Average of Active Phases Volts Line Neutral V Average of Active Phases Total Real Power P Power Factor Average of Active Phases 3 KVA Total Apparent Power S B A B VBC B KW B VLN C A C VAC C KW C V...

Page 13: ...Voltage Clipping A B C INFO MODEL OS SN RS Serial Number Reset System Operating System ALERT INFO PLOSS A b C LOWPF A b C F ERR A I OVR A b C V OVR A b C PASWD 00000 PASWD 00000 Model Number Energy Pu...

Page 14: ...3L 2L 1n 2L 1L 1n Back To SETUP Back Back Back S COM To Setup p 2 SPLOS Next S PT Set Potential Transfomer Ratio RATIO Potential transformer step down is RATIO 1 Default is 1 1 No PT installed See In...

Page 15: ...ration error bit in the Modbus Diagnostic Alert Bitmap if equipped Wh P Set Pulse Energy In Watt Hours VAR Hours if present per Pulse When moving down to a smaller energy the meter will not allow the...

Page 16: ...y the subinterval timer The default subinterval is 15 minutes at a 15 minute interval setting the buffers hold 60 days of data An external timer can be used over Modbus by setting this register to 0 U...

Page 17: ...ted power cycle etc during the previous demand sub interval and whether the Real Time Clock has been changed re initialized to default date time due to a power cycle or modified via Modbus commands Da...

Page 18: ...s 0x11 Report ID Return string byte0 address byte1 0x11 byte2 bytes following w out crc byte3 ID byte 247 byte4 status 0xFF if the operating system is used status 0x00 if the reset system is used byte...

Page 19: ...er Factor Phase B 015 R UInt Ratio 0 0001 0 10000 Power Factor Phase C 016 R UInt Volt V 0 32767 Voltage Phase A B 017 R UInt Volt V 0 32767 Voltage Phase B C 018 R UInt Volt V 0 32767 Voltage Phase A...

Page 20: ...ite no more frequently than every 10 seconds Write 16640 0x4100 to Reset Logging E50C3A only Write 16498 0x4072 to Clear Pulse Counters to 0 Read always returns 0 130 R W NV UInt 10 11 12 31 40 Single...

Page 21: ...ase should be 277V When the threshold is set to 10 if any phase drops more than 10 below 277V less than 249V or if any L L voltage drops more than 10 below 480V less than 432V the corresponding phase...

Page 22: ...gister register 144 and reset the energy accumulators see reset register 129 Bit 15 Energy pulse output configuration error present pulse energy setting may not keep up with the theoretical max system...

Page 23: ...nd register 129 Bit 1 Log Buffer Read Collision 1 Set to 1 if the meter tried to save log data while the user was reading the log Logging Page Register has been set to something other than 0 On the fi...

Page 24: ...egister Pointer 4 Default is 30 Reactive Energy LSR 173 R W NV UInt Log Register Pointer 5 Default is 37 Real Demand 174 R W NV UInt Log Register Pointer 6 Default is 38 Reactive Demand 175 R W NV UIn...

Page 25: ...l Real Power Present Demand 327 328 R Float kVAR Total Reactive Power Present Demand 329 330 R NV Float kVA Total Apparent Power Present Demand 331 332 R NV Float kW Total Real Power Max Demand 333 33...

Page 26: ...parameters CT and PT ratings system type etc See the Setup section Incorrect voltage inputs Check power meter voltage input terminals to verify adequate voltage Power meter is wired improperly Check a...

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