27
CET Electric Technology
2.
Move the installation clip at the bottom of the PMC-521D downward to the “unlock” position.
3.
Mount the PMC-521D on the DIN Rail.
4.
Push the installation clip upward to the “lock” position to secure the PMC-521D on to the DIN Rail.
Figure 2-32 DIN-Rail Mounting the Optional PMC-521D
2.4 Wiring Connections
2.4.1 Panel Mode and Wiring
The PMC-592 supports six
Panel Modes
. Please read this section carefully before installation and choose
the correct wiring method for your panel.
Panel Mode
Application, Power Calculation and Applicable Alarms
Single Panel Mode I
with
One Mains
Only
Application
:
This configuration is the most common and applies to systems with a
Single Mains
(
Mains-I
) only.
V1 = Mains-I Voltage Inputs
I1 = Mains-I Current Inputs
V2 = Mains-II Voltage Inputs (Not Used)
I2 = Mains-II Current Inputs (Not Used)
Power Calculation:
Mains-I Power = V1 × I1 (Wye, Delta or 1P3W)
Branch Power = V1 × Branch Current A/B/C/D
Mains-II Power = Not Available
Applicable Alarms:
Global
Mains-I
Mains-II
Voltage-I
●
○
○
Voltage-II
○
○
○
Current/Power-I
●
○
○
Current/Power-II
○
○
○
CT Strip A/B
●
○
○
CT Strip C/D
●
○
○
Frequency
●
○
○
DI
●
○
○
RTD
●
○
○
Caution
Under no circumstances should the PT secondary be shorted.
Under no circumstances should the CT secondary be open when the CT primary is energized. CT
shorting blocks should be installed to allow for easy maintenance.