MOTHERBO ARD
INSTALLATION AND OPERATING INSTRUCTIONS
I.
General
The HM1 Motherboard is available in various AC and DC input voltages and can be
configured with Solid-State or Relay Outputs.
The model designation indicates the input voltage and output configuration as follows.
Model HM1-XX-X
R
= Relay Outputs,
Blank
= Solid-State Outputs
3
= 120 VAC,
7
= 24 VAC,
23
= 12 VDC,
24
= 24 VDC
NOTE: Solid-State outputs are available only on the Model HM1-23.
II. Installation Instructions
1.
Using four #8 screws, fasten the Model HM1 Motherboard to a solid surface.
2.
Make the appropriate connections to the
PWR+
,
PWR-
, and
EARTH
terminals on
terminal strip 1 (
TS1
) as shown in the table below.
Power Input - Terminal Strip 1 (TS1)
Voltage
PWR+
PWR-
EARTH
AC
AC Line
AC Neutral
Ground
DC
DC+
DC-
Ground
Make certain to provide adequate circuit protection by including an in-line fuse in the
line or DC+ lead. Suggested fuse ratings are shown in the table below.
Power Input - Fuse Ratings
Model
HM1-3
HM1-7
HM1-23
HM1-24
Fuse
0.062 A
0.75 A
0.25 A
0.25 A
3.
Connect the loop leads from Loop 1 (Detector 1), Loop 2 (Detector 2), and Loop 3
(Detector 3) to the terminals on terminal strip 1 (
TS1
) labeled
LOOP 1
,
LOOP 2
, and
LOOP 3
.
4.
The outputs of Detectors 1, 2, and 3 terminate on terminal strip 2 (
TS2
). These
motherboard outputs connect to the inputs of the control equipment.
Connection Configuration - Terminal Strip 2 (TS2)
Output Type
Output Mode
Normally Open
Normally Closed
Common
Solid-State
Fail-Safe
Terminal A
—
Terminal C
Fail-Secure
Terminal A
—
Terminal C
Relay
Fail-Safe
Terminal B
Terminal A
Terminal C
Fail-Secure
Terminal A
Terminal B
Terminal C
NOTE: The Solid-State output is an Open Drain FET output with DC Common tied to Terminal C.
MODEL HM1 SERIES
3510 E. Atlanta Ave.
Phoenix, AZ 85040 USA
Telephone: (480) 968-6407
Fax: (602) 437-1996
Website: www.editraffic.com
E-mail: [email protected]
