2010ECL-NYC SERIES SIGNAL MONITOR
OPERATIONS MANUAL
Eberle Design Inc.
Page 1
Section 1
BASIC FUNCTIONS
1.1 MODEL DESCRIPTION
The Signal Monitor consists of five models; the 210E, 210ECL, 2010, 2010ECL and
2018ECL. The model 210E is the base unit. The model 2010ECL and 2018ECL add an
EIA-232 serial port that gives the unit the capability to communicate
with a Controller Unit or
PC based operational software for status and fault event data. The model 2010ECL and
2018ECL also add an enhanced event logging capability for full time stamped event
reporting. The model 2010, 2010ECL, and 2018ECL units are configured to be compatible
with the requirements of both the 170 Controller Unit and the 2070 Advanced Traffic
Controller. The model 210E and 210ECL units are compatible with the requirements of the
170 Controller Unit. The model 2018ECL is equivalent to the 2010ECL but provides eighteen
channels.
The “ip” models replace the EIA-232 port with a 10/100 Mbps Ethernet port. Where
not specified otherwise, the information in this manual will apply to all models.
1.2 BASIC FUNCTIONS
The Signal Monitor is a device used in a traffic controller assembly to monitor traffic signals
at an intersection for conflicting proceed indications caused by malfunctions of the controller,
load switches, field wiring and loads, or miss-wiring of the cabinet. The Signal Monitor also
provides error sensing of the cabinet 24VDC supply and monitors the controller Watchdog
output. The Signal Monitor is directly interchangeable with a standard model 210 Signal
Monitor and complies with all specifications outlined in Chapter 4 (Model 210 Monitor
Specifications) of the
Caltrans Traffic Signal Control Equipment Specifications
(January
1989).
When triggered by the detection of a fault condition which exists longer than the minimum
period, the Signal Monitor will enter the fault mode causing the Output relay contacts to close
and enabling the Stop-Time output to the controller. The cabinet assembly should be wired
such that the closure of the Output relay contacts will cause an automatic switching of the
field signal outputs from normal operation to flashing operation. The Signal Monitor will then
display the appropriate fault indications and will remain in this fault mode until a reset
command is issued. The loss of AC Line power will not reset the fault mode (except
Diagnostic Fail). In the event of AC Line power loss the Signal Monitor will retain the status
of all fault and channel indicators and will display the correct fault and channel status upon
restoration of AC Line power.
1.2.1 CONFLICT MONITORING
The Signal Monitor is capable of monitoring 16 channels (2018ECL provides 18 channels).
Each channel consists of a Green, Yellow, and Red field signal output. A Program Card is
provided for assigning conflicting channels and inhibiting Yellow monitoring for required
channels. The Signal Monitor detects the presence of conflicting Green or Yellow signals on
the AC field terminations between any two or more channels assigned to conflict on the
Program Card. The monitoring circuitry is capable of detecting either full wave or positive
and negative half-wave field signal outputs at the specified voltage levels.
1.2.2 24VDC MONITORING
Sensing of the cabinet 24VDC supply is provided as specified in Section 4.2, Chapter 4 of
the
Caltrans Traffic Signal Control Equipment Specifications
. When the 24VDC input falls
below the specified voltage levels the Signal Monitor will enter the fault mode causing the
Output relay contacts to close and enabling the Stop-Time output to the controller. See
Section 8.1.3.
