Solid State Instruments CIR-44 Customer Interface Relay Instructions
- August 28, 2024
- Solid State Instruments
Table of Contents
CIR-44
Premium Solid State
CUSTOMER INTERFACE RELAY
INSTRUCTION SHEET
CIR-44 Customer Interface Relay
ENCLOSURE – The CIR-44 has a NEMA4X weatherproof and dustproof enclosure.
The CIR-44 may be mounted in any position, but in general is most convenient
and designed to be mounted with the hinge on the left side in the orientation
shown above. Four mounting holes are provided.
POWER INPUT – For 120 to 277 VAC power, connect the “hot” lead to the
LINE terminal. Connect the NEU terminal to neutral. Connect the GND terminal
to the electrical system ground. The CIR-44 must be wired Phase to Neutral,
not Phase to Phase. If no true neutral is available, connect both the NEU and
GND terminals to the electrical system ground. The GND terminal MUST be
connected. DO NOT leave the GND terminal unconnected.
METER CONNECTIONS – Four 2-Wire (Form A) pulse inputs are provided on the
CIR-44. Connect the K and Y wires from each meter. Connect the K & Y leads
from Meter #1’s dry-contact pulse output to the K & Y terminals on INPUT #1 of
the terminal strip in the utility compartment. Connect Meter #2 to K & Y
terminals of Input #2, etc. The Y input terminal provides a “pulled up”
wetting (sense) voltage of +12VDC to the meters’ “Y” terminals. The CIR44’s
“K” input terminals provide a common return. The CIR-44’s KY inputs are
compatible with electromechanical or solid state pulse initiators. When using
an open-collector NPN Bi-Polar transistor output or open-drain N-Channel FET
transistor to interface a meter with the CIR-44, the transistor’s emitter(-)
pin or the FET’s source(-) pin must be connected to the K input terminal. The
transistor’s collector(+) or the FET’s drain(+) pin must be connected to the Y
input terminal. Each Y input has a YELLOW LED in the customer compartment to
show when the Y input is active.
OUTPUTS – Four two-wire isolated outputs are provided on the CIR-44, with
output terminals K1 & Y1, K2 & Y2, K3 & Y3, and K4 & Y4 and are located in the
bottom of the enclosure in the customer compartment. Outputs are solid-state
dry-contact type and must be provided with a wetting voltage from an external
source, usually provided by the pulse receiving device. Contacts are rated at
120VAC/VDC MAX and current limited to 180mA. Transient suppression for the
contacts of the solid state relays is provided internally. Each relay must be
assigned or “mapped” to one of the four input channels, using the SSI
Universal Programmer V1.1.0 or later. LEDs on each output show the output’s
status. A GREEN LEDs indicates each output’s K-Y closure.
CIR-44 Wiring Diagram
CIR-44WiringDiagram.vsd
| CIR-44 Repeating Pulse Relay Wiring Diagram | REVISIONS |
|---|---|
| NO. | DATE |
DATE ORIGINAL
05/10/24| SCALE
N/A| | |
| |
| |
LATEST REVISION| JOB NO.| CHECKED| WHB
Brayden Automation Corp./Solid State Instruments div.
6230 Aviation Circle Loveland, CO 80538 (970)461-9600
support@brayden.com
www.solidstateinstruments.com
MAXIMUM POWER DISSIPATION OF OUTPUTS – Output devices are rated at a
maximum of 1500 mW. Care should be taken to insure that the wetting voltage
used across the output device times the current (or burden) of the input of
the downstream device, does not exceed the maximum power output dissipation of
1500mW. Normally this is not a problem since most downstream instrumentation
devices are high impedance and present a very low burden, usually less than
10mA. For example, if 120VAC is used, the maximum allowable current across the
output is 12.5 mA. If 12VDC is used, the maximum current allowable across the
output is approximately 125mA, well under the 180mA current rating of the
device. Therefore, the maximum dissipation when using 12V is 1500mW since the
current is limited to .125 Amp. Calculate the maximum current using the
following formula: 1500milliWatts / Voltage = Max. Current (burden) in
milliamps. Adjust the voltage or current used across the output to insure that
the maximum power dissipation, voltage and current maximums are not exceeded.
FUSES – Each output has its own automatically resetting Fuse rated at
150mA. F1, F2, F3 and F4 correspond to outputs 1, 2, 3, and 4, respectively.
Maximum fuse ratings are designated on the silkscreen under or adjacent to
each fuse position.
FORM A PULSE WIDTHS – In the event that the user requires a fixed pulse
width on the output, a pulse width from .00001 second to 10000 seconds can be
programmed. The fixed output length is disabled by entering 0.0000 as the
pulse width. This puts the output in the toggle mode or “Mirror” mode where
the output timing equals the input timing.
OPERATING MODES – The CIR-44 has three operating modes as follows:
1.) Form A In/Form A Out – Pass thru; Output closure time equals Input closure
time.
2.) Form A In/Form A Out – Pass thru with Fixed Width Output timing.
3.) Form A In/ Form A Out – Conversion Mode with designated Input and Output
values.
These modes are assignable by the entries into the programming table.
TOTALIZING – The CIR-44 is able to totalize any of the four inputs, with
either a positive (delivered) ore negative (received) value. In this way, the
CIR-44 allows you to “Net Out” energy between Delivered and Received energy
quantities. Negative Limits are also settable to insure that negative accrued
values do not go further negative than the designated limit. Pulse values are
also settable for input and output values so that actual pulse values from
different meters may be accurately totalized. See the SoCo Programmer Manual
for
detailed information on totalizing.
WORKING WITH THE CIR-44 RELAY
OPERATING MODES: The CIR-44 Programmable Customer Interface Relay has 3
operating modes. One is “Pass-Thru”, the second is “Fixed-Width” output mode
and the third is “Value Conversion” mode. Any of these modes may be used with
or without the totalizer function.
Mode 1 – Form A In/Form A Out: In this Pass-Thru mode, both the input and
the output are set to Form A (2-wire) mode and the fixed Output Pulse Width is
disabled. The Form A output(s) follow the Form A input. Output pulse widths
equal the input pulse widths.
Figure 1: Form A Input/FormA Output Operation Normal Mode
Mode 2 – Form A In/Form A Out with fixed Output Pulse Width: In this Fixed Width mode,the Form A output(s) follow the Form A input, but close for the selected pulse width duration.
Figure 3: Form A Input/FormA Output Operation Fixed Width Output Pulse
In this mode, the output pulse width is set to 50mS, up to 10,000mS, so output
pulses are a fixed width ( ) as defined by the Pulse Width entry box. The
input pulses will speed up and slow down so the time between pulses is
variable, but the on-time (T1) of a pulse is fixed. If input pulses are faster
than output pulses, an overflow can occur in this mode. That means that output
pulses cannot keep up with input pulses because of the timing constraints of
the fixed pulse width. Pick a pulse width shorter than your fastest input
pulse or disable the fixed pulse width, then click on
Mode 3 – Form A In/Form A Out, Pulse Value Conversion Mode: In this mode, the
Input and Output pulse values are entered into the program. Upon each closure
of the Form A input, the value of the pulse is added to the Accrued Energy
Value (AER) register. When the value in the AER is equal to or greater than
the programmed output pulse value, a pulse is
outputted. This conversion function allows the input and output pulse values
to be different.
Figure 4: Form A Input/FormA Output Operation Pulse Value Conversion Mode
For Example, let’s assume that your input pulses are worth 2.88 watt-hours per
pulse. Further let’s assume that your ouput pulse value is set to 4.00 watt-
hours per pulse. The first pulse enters 2.88 in the accrued Energy register
(AER). No output pulse is generated. The second pulse received increments the
AER by another 2.88 wh giving 5.76 wh. 5.76 is greater than 4 so a pulse is
generated. A remainder of 1.76 wh remains in the AER. The third input pulse of
2.88 adds to the AER giving a balance of 4.64 wh. Another output pulse is
generated, leving .64 wh in the register. The fourth input pulse adds 2.88 to
the AER giving a new balance of 3.52 wh. This is not enough to generate a
pulse, so 3.52 is held in the AER until the 5th pulse is received, at which
time another pulse is generated. This process continues, making sure that the
output pulses are worth 4.00 Wh’s each. So as you can see this creates an
assymmetrical pulse pattern but changes the value from 2.88wh/ pulse to 4.00
wh/pulse.
Mapping each Output to an Input: The four outputs of the CIR-44 must be
assigned, or “mapped”, to one of the inputs. Any output may be mapped to any
one of the four inputs.
The default configuration is 1 to 1, 2 to 2, 3 to 3 and 4 to 4. This is called
the 4×4 configuration and is the default configuration. In this configuration,
each output is tied to the input of the same number.
Any configuration or combination of outputs to inputs is possible depending on
the application. All four outputs may be assigned to one input giving four
isolated contacts. The unused inputs may be disabled.
Another popular configuration is the “24” where two outputs each follow one
input. For example outputs #1 and #2 follow input #1 and outputs #3 and #4
follow Input #2. Therefore,
Inputs #3 and #4 are not used. This configuration is often used for delivered
and received kWh pulses, or for kwh and kVARh pulses.
Contact the factory for technical support at (888)272-9336.
SOCO Programer
The SoCo Programer is a windows-based programming utility for the CIR-44 Series. Download the SoCo Programmer from the CIR-44 page on the SSI website at www.solidstateinstruments.com/sitepages/downloads.php. The Programmer page is shown below. Please see the SOCO Programming manual for instructions on how to program the CIR-44.
Reset Factory Defaults- You can reset the CIR-44 to the factory defaults by clicking on the Defaults button.
SOLID STATE INSTRUMENTS
a division of Brayden Automation Corp.
6230 Aviation Circle, Loveland, Colorado 80538
Phone: (970)461-9600 Fax: (970)461-9605
E-mail:support@solidstateinstruments.com
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