ESP Safety UPES-50D, Operating Manual, Page: 3 / 51

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Description of UPES Controller
UPES-50D (hereinafter – UPES) is designed to operate with primary detectors via Modbus
RS485 signals. The input signal exceedance of the set threshold levels is controlled by audible
and LED alarms as well as connected peripheral devices via relay outputs for RS-485 interface
transmission of all channel data in Modbus RTU protocol format.
UPES is installed outside the explosion hazard zones and shall be operated at temperatures from
- 10 to 50 °C and relative ambient air humidity up to 95% at 35°С. UPES functional capabilities
enable to power up to 16 primary detectors: SGOES, TGAES Rx, TGAES Tx, SSS-903, IPES
IR/UV, IPES IR3.
The UPES multi-channel controller consists of a control panel capable of connecting up to 16X8
devices via RS485. From 1 to 128 devices can be connected to the UPES50D controller using
Modbus RS485. The UPES controller can only provide power supply to no more than 16
primary detectors by itself at 24VDC each. If more than one device is to be connected to each
channel card, an additional power supply will be necessary. The UPES can only power one
device per channel. Each Channel of the UPES has 2 dry contact relays for the first alarm
threshold and for the second alarm threshold. There is also a common dry contact relay for the
third alarm threshold for all channels. All dry contacts relays provide current switch up to 2A at
220VAC.