Monarco-HAT-Hardware-Reference-Manual

Monarco HAT Hardware Reference Manual 20190728-1
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1. Introduction
Monarco HAT is an add-on board which provides input-output interfaces following industrial
automation standards for the Raspberry Pi (B+ and newer) minicomputer. It is designed according to
the HAT (Hardware Attached on Top) https://github.com/raspberrypi/hats specification.
Here is a brief overview which functions the Monarco HAT provides:
Power supply: 10-30 VDC, powers also the Raspberry Pi
4 × digital IN: 24 V tolerant, 5 V TTL compatible, optical isolation, common GND
o 2 × counter (pulse/DIR) or 2 × encoder (A/B), up to 500 kHz
4 × digital OUT: open-drain, max 40 VDC, 1 A per channel continuous
o all with up to 100 kHz PWM
o short-circuit protection (continuous)
2 × analog IN: 0-10 V / 0-20 mA, 12-bit
o electronic switching of voltage/current mode
o protected against overvoltage and reverse polarity
o 500 Hz bandwidth
2 × analog OUT: 0-10 V, 0.5 ms settling time, 12-bit
1 × RS-485 with ESD protection
1 × 1-Wire bus with ESD protection
9 × LED indicator, by default indicate status of digital inputs and outputs and system status,
can be switched to user controlled mode
High quality push-in terminals, detachable connector
Battery-backed RTC chip for keeping the track of time
Hardware watchdog for power-cycling the Raspberry Pi in case of failure
Aluminum case for Raspberry Pi + Monarco HAT ready for DIN rail mount is available
Image 1.1: Monarco HAT board mounted on Raspberry Pi, with detached terminals connector.