HA40 4-Channel Controller
HA40 Technical Manual
3-4
3.1.2 Optional Analog Input PCB
(P/N 10-0221)
Transmitter input PCB option # 10-0298, shown in Figure 3-3, is
available for interfacing the HA40 to field transmitters with 4-20mA or
voltage outputs (0-2 VDC max). TB1 & TB2 provide Channel 24VDC,
HI and LO terminals for receiving analog inputs. R1, R2, R3, & R4 are
100 ohm precision socketed termination resistors connected between
each channel’s HI & LO input terminals. These may be removed if
voltage inputs are to be applied. Figure 3-4 shows correct wiring for
both 2-wire and 3-wire transmitters.
TB3 provides the dedicated failsafe-5 amp-form C common FAULT
relay.
R3
U1
R1
P1
TB2
R4
R2
TB1
24VDC
HI
LO
CH3
24VDC
HI
LO
CH4
24VDC
HI CH1
LO
24VDC
HI CH2
LO
4-20mA INPUTS
Assy 10-0221-4
*R1 = Ch1 100 ohm 4-20mA terminator
*R2 = Ch2 100 ohm 4-20mA terminator
*R3 = Ch3 100 ohm 4-20mA terminator
*R4 = Ch4 100 ohm 4-20mA terminator
*Spare = Spare 100 ohm 4-20mA
terminator
* These 5 resistors are socketed for easy
replacement.
Terminators are connected between each
channel's HI & LO terminals.
LO = 24VDC Power Supply Common
24VDC = 24VDC Power output
Figure 3-3. Optional Analog Input PCB (P/N 10-0221)
Figure 3-4. Wiring for 2- and 3-wire Transmitters
3.1.3 Optional Discrete Relay PCB’s
(P/N 10-0222)
The optional Discrete Relay PCB, shown in Figure 3-5, adds six 5
amp form C relays. Each relay is fully programmable as described in
Section 2.3.1
. Many HA40 applications utilize the standard equipped
Relay 1 / Relay 2 (see
Section 2.3.1
) and do not require optional
discrete relays
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.
AC or DC power supplies to relays on the 10-0222 Discrete Relay PCB
option must be the same for each relay. Example: 24VDC should not
be the power switched by one relay and 115VAC by others.
Summary of Contents for HA40
Page 6: ...HA40 4 Channel Controller HA40 Technical Manual 1 1 1 General Description ...
Page 11: ...HA40 4 Channel Controller HA40 Technical Manual 2 1 2 Operation ...
Page 21: ...HA40 4 Channel Controller HA40 Technical Manual 2 11 ...
Page 22: ...HA40 4 Channel Controller HA40 Technical Manual 3 1 3 Motherboard Interface PCB ...
Page 31: ...HA40 4 Channel Controller HA40 Technical Manual 4 1 4 Enclosures ...
Page 34: ...HA40 4 Channel Controller HA40 Technical Manual 5 1 5 Parts List ...
Page 36: ...HA40 4 Channel Controller HA40 Technical Manual 6 1 6 Specifications ...
Page 38: ...HA40 4 Channel Controller HA40 Technical Manual 7 1 7 Warranty ...