Air Bath Or Airless Ac Input And Fuses - Siemens Maxum Edition II Installation Manual

Installation Steps
3.5 Cable Connections
3.5.3.1

Air Bath or Airless AC Input and Fuses

In Air Bath or Airless models, 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. This allows the electronics to be conveniently powered by a separate circuit
from the heaters. Each secondary power source must have its own circuit breaker, certified for
use in the target environment. See the Application Drawing Package for details.
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 3-8
22
*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 H N G 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
Installation Manual, 12/2019, 2000595 Rev 1
Installation Manual