Table of Contents
Advertisement
HA20 2-Channel Controller
The basic HA20 consumes only 1.5 watts of 10-30 VDC from the
integral power supply.
Optional features, and external devices such as remote transmitters,
increase power consumption as described below:
• Discrete Relay PCB option; add 1.5 watt.
• 4-20mA Output PCB option; add .5 watt.
• TB3 terminals 1 & 2 on the motherboard provide a maximum
of 350mA output power for powering of auxiliary external
devices such as relays, lamps or transmitters (see
Power consumed from these terminals must be included when
calculating system power consumption.
• 10-0221-2, Analog Input PCB option; add wattage for each
monitor connected to this board's 24 VDC terminal
Some applications require the HA20 controller to source power for high
power monitors. Both 15 watt and 50 watt power supplies, UL rated
for Div 2 hazardous areas, are available. This option is also available
with a Div 1 enclosure if an explosion-proof enclosure is required. (See
Section 5 -
Specifications.)
WARNING
A backup, or external DC power source DOES NOT source auxiliary
power output (see figure 3.1 TB3).
HA20 Technical Manual
1.3.2 Relays
Two mechanical (dry contact) Common Form C relays are standard and
may be mapped to various alarm events as described in
HA20's may also be equipped with optional solid-state common Form
A relays (see
requiring non-arcing switching. Solid-state relays are recommended
for switching of highly inductive loads.
A six mechanical (dry contact) Discrete Relay option board (see
Section
3.1.6) provides dedicated Form C relays for ALARM 1, ALARM
Figure
3-1).
2 and FAULT for all channels.
WARNING
All mechanical (dry contact) relays are rated at 5 Amp for 28 VDC
and 250 ~VAC RESISTIVE loads. IMPORTANT: Appropriate diode (DC
loads) or MOV (AC loads) snubber devices must be installed with
inductive loads to prevent RFI noise spikes.
Optional solid state relays are rated at 2 Amp 12-280~VAC (600Vpk).
Relay wiring should be kept separate from low level signal wiring.
1.3.3 Ambient Temperature Range
-25 to 50 degrees C
1.3.4 Humidity Range
0 to 90% R. H. Non-Condensing.
1.3.5 Altitude
Recommended up to 2000 meters
1-4
Section 5 - Specifications
Section
2.3.1.
for details) in applications
Advertisement
Table of Contents
