Operating Instructions

Chapter 2—Hardware Features
HOA (Hand-Off-Auto) Upgrade Kits
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Siemens Industry, Inc.
Owner's Manual
588-682
Building Technologies
2019-01-25
Unitary Equipment Controller Specifications
Dimensions (L × W × D)
TC Unitary Equipment Controller, 16 point,
BACnet MS/TP
10.7" × 5.9" × 2.45"
(272 mm × 150 mm × 62 mm)
TC Unitary Equipment Controller, 24 point,
BACnet MS/TP
10.7" × 5.9" × 2.45"
(272 mm × 150 mm × 62 mm)
DIN rail (EN 60715 TH 35-7.5, steel)
1.38" × 0.30" × 0.04"
(35 mm × 7.5 mm × 1 mm)
Processor, Battery, and Memory
Processor and Clock Speed Freescale MPC852T, 100 MHz
Memory 24 MB (16 MB SDRAM, 8 MB Flash ROM)
Serial EEPROM 4 KB
Battery backup of Synchronous Dynamic
(SD) RAM (field replaceable)
AA (LR6) 1.5 Volt Alkaline (non-rechargeable)
180 days (accumulated)
Typical Accumulated Battery Life of Compact UEC:
16MB SDRAM Std (alkaline): 180 days
Rooftop (Extended Temperature) Models: 330 days (accumulated)
AA (LR6) 3.6 Volt Lithium (non-rechargeable)
Battery backup of Real Time Clock
10 years (32°F to 122°F (0°C to 50°C))
Coin cell (BR2032) 3 Volt lithium
These are typical accumulated times while power is off.
Rooftop (Extended Temperature) Models 18 months
BACnet MS/TP Field Level Network (FLN) 9600 bps to 115.2 Kbps
Factory-
set HMI Communication Speed
9600 bps
Electrical
Power Requirements 24 Vac ±20% input @ 50/60 Hz
Power Consumption (Maximum) TC-16: 18 VA @ 24 Vac
TC-24: 20 VA @ 24 Vac
TC-36: 35 VA 24 Vac
AC Power and Digital Outputs NEC Class 1 Power Limited
Communication and all other I/O NEC Class 2
Digital Input
Contact Closure Sensing
Dry Contact/Potential Free inputs only
Does not support counter inputs