Pecm Functions; Ac Input And Distribution - Siemens Maxum II Reference Manual

Electronic Compartment Component Descriptions and Maintenance Procedures
2.2 Power Entry and Control Module
2.2.3

PECM Functions

2.2.3.1

AC Input and Distribution

AC mains power is wired to TB1 and TB2. TB10 is an optional connection for an uninterruptable
power supply for the 24 V power supply output, as shown in the diagram below.
Note
The power switching circuit is designed for either 115 VAC or 230 VAC. For safety reasons,
the PECM is not designed to convert DC to AC. Attempted operation from a DC source will
damage or destroy the PECM. To generate and control 115 VAC from a DC voltage system,
the customer must use components external to the PECM.
J1
1
H
2
G
N
3
AC Filter Plug
(for 24V supply)
Figure 2-5
20
*TB10 parallel-connected
to TB1 if UPS is not used
Filtered AC
F3
3A
Holder
AC Chassis
Ground
PECM AC Power Distribution
TB10* TB1 TB2
H N G
H N H N G
F1
F2
16A
16A
ABH2
ABH1
Air Bath Heater Power
Low Wattage
Heater Relays 1- 5
F4 10A
Medium Wattage
Heater Relays
F5 6A
Maxum II Reference Manual
Manual, 7/2017, 2000596-001