3
IQ 35M Meter Series
IB02601008E September 2011 www.eaton.com
ZL0073-0C
Supported system types
The meter has a number of different possible system wiring configurations (see Wiring Diagrams, page 9-10). To configure the meter, set the System Type via the User
Interface, Modbus register 130 (IQ35MAx2 and IQ35MAx3), or BACnet Analog Value Object AV2 (IQ 35MA15). The System Type tells the meter which of its current and volt-
age inputs are valid, which are to be ignored, and if neutral is connected. Setting the correct System Type prevents unwanted energy accumulation on unused inputs, selects
the formula to calculate the Theoretical Maximum System Power, and determines which phase loss algorithm is to be used. The phase loss algorithm is configured as a
percent of the Line-to-Line System Voltage (except when in System Type 10) and also calculates the expected Line to Neutral voltages for system types that have Neutral
(12 & 40).
Values that are not valid in a particular System Type will display as “----” on the User Interface or as QNAN in the Modbus registers or BACnet Analog Input objects
CTs
Voltage Connections
System Type
Phase Loss Measurements
Wiring
Diagram
Number of
wires
Qty
ID
Qty
ID
Type
Modbus Register 130 or
BACnet Analog Value object AV2
User Interface:
SETUP> S SYS
VLL
VLN
Balance
Diagram
number
Single-Phase Wiring
2
1
A
2
A, N
L-N
10
1L + 1n
AN
1
2
1
A
2
A, B
L-L
11
2L
AB
2
3
2
A, B
3
A, B, N
L-L with N
12
2L + 1n
AB
AN, BN
AN-BN
3
Three-Phase Wiring
3
3
A, B, C
3
A, B, C
Delta
31
3L
AB, BC, CA
AB-BC-CA
4
4
3
A, B, C
4
A, B, C, N Grounded Wye 40
3L + 1n
AB, BC, CA
AN, BN, CN
AN-BN-CN & AB-BC-CA
5, 6
To avoid distortion, use parallel wires for control power and voltage inputs.
The following symbols are used in the wiring diagrams on the following page.
Symbol
Description
Voltage Disconnect Switch
Fuse (installer is responsible for ensuring compliance with local requirements. No fuses are included with
the meter.)
Earth ground
X2
X1
Current Transducer
Potential Transformer
Protection containing a voltage disconnect switch with a fuse or disconnect circuit breaker. The protection
device must be rated for the available short-circuit current at the connection point.
Display Diagram
Tx
Rx
ERR
♥
Screen Name or Units
Diagnostic
Alert
Numeric
Data
Alive Indicator
RS-485 Equipped Units Only:
Transmit Data
Receive Data
Receive Data Error
LCD Screen:
Buttons:
+
–
(Up)
Select
(Right)
Next
(Down)
Select
(Left)
Back
Export (IQ 35MA2x models only)
Import (IQ 35MA2x models only)
