REDARC HBA1224 Handbrake Alarm Owner’s Manual
- June 10, 2024
- REDARC
Table of Contents
REDARC HBA1224 Handbrake Alarm
HBA1224
HBA1224-003
HANDBRAKE ALARM
The HBA1224 / HBA1224-003 handbrake alarm is used in 12 V or 24 V automotive
systems. It monitors the handbrake switch and the door frame switch* to
provide audible and visual warning if the door is opened while the handbrake
is not applied. Once the alarm starts, it stays latched on until the handbrake
is applied, even if the door is closed again.
The HBA Series improves vehicle safety by:
-
Reducing the risk of the vehicle being accidentally left unattended without the handbrake on.
-
Controlling an optional additional warning device such as a siren or horn (with the use of a suitable relay) or a suitably rated piezoelectric buzzer or a beacon.
-
The door frame switch is the switch mounted in the door frame that switches on the cab light when the door is opened.
FEATURES
- Compact size
- Internal visual and audible warning
- External output for buzzer or relay
- Latching alarm function
- Ground and positive door frame switch inputs
- Ground and positive handbrake switch inputs
HBA1224‑003 KIT OPTIONS
Each item can be purchased individually (HBA1224‑003 and HBAKIT‑001) or as a combined kit (HBA1224‑003‑KIT1). HBAKIT‑001 is required to interface with the HBA1224‑003 if the installation does not already have a mating connector or a ready mating loom.
HBA1224-003-KIT1
Handbrake Alarm with Connector plus the Mating Connector Kit
WIRING
- Refer to the wiring diagrams for details on wiring the HBA1224/HBA1224-003. Two options are as a guide, depending on how the vehicle handbrake switch is wired. Refer to the table for other wiring configurations.
- If the vehicle has a positive door switch for the dome light, the wire must be cut and a diode must be added in order to prevent false alarms from the manual dome switch. This diode must be rated to supply dome light(s).
- The optional output (grey wire) can be used to drive an additional load or relay, provided that the current does not exceed 0.5 A. For , the additional load may be a suitably rated piezoelectric buzzer or a strobe beacon, placed to ensure that any warning is detected by the driver. Note — some modern resistor and diode protected relays draw more than 0.5 A.
- All unused wires should be taped over (applicable to HBA1224).
- The Handbrake Negative input (Green wire) has specific operating voltage requirements. Care should be taken if other circuits, electronic controls or power circuits are connected to this input which may cause voltages other than battery positive or negative. The following specification applies
Handbrake On: Battery Negative ± 2 VDC
Handbrake Off: Battery Positive ± 2 VDC
CAUTION
- Care must be taken to avoid overloading the outputs. The optional output is rated at 0.5 A max. In ground switched applications, the outputs for the dome light(s) and the dashboard light are 2 A max. If higher currents are required, suitably rated relays must be added.
- The HBA1224 relies on the switches operated by the handbrake and the door. Each of these switches should be functionally tested on a regular basis in conjunction with the Handbrake Alarm to ensure correct operation.
- The HBA1224 is a reminder only; it does not monitor how firmly the handbrake is applied. The operator must ensure the handbrake is operated in a manner that maintains vehicle safety.
- Some full air brake and air/hydraulic brake systems do not have a switch on the handbrake lever itself. The handbrake relay on the air valve should be used for indication that the handbrake is applied on these vehicles.
CONNECTIONS
WIRING DIAGRAMS
NOTE: A combination of the two wiring diagrams may be used to suit
vehicles with either negative door and positive handbrake switches (Install
3), or positive door and negative handbrake switches (Install 4). Refer to the
table below.
** If relays are connected to HBA inputs or outputs they must have diode
suppressed coils.
*** The Grey wire is capable of 0.5 A max. For loads larger than 0.5 A, this
wire should be used to power a suitably rated diode suppressed external relay
SPECIFICATIONS
LIMITED WARRANTY
For full warranty terms and conditions, visit the Warranty page of the REDARC website: www.redarcelectronics.com/warranty
Australia, New Zealand & Europe
REDARC Electronics Pty Ltd
23 Brodie Road (North),
Lonsdale SA 5160
Australia
Australia +61 8 8322 4848
New Zealand +64 9 222 1024
UK & Europe +44 (0)20 3930 8109
North America
REDARC Corporation
c/o Shallco, Inc.
308 Component Dr.
Smithfield, NC 27577
USA
USA +1 704-247-5150
Canada +1 604-260-5512
Mexico +52 558-526-2898
Design, configuration and specifications are subject to change without notice.
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