Athena 16C User Manual
SERIES
16C
TEMPERATURE/PROCESS
CONTROLLER
Standard Options and
Digital Communications
User’s Guide
© Copyright 2004, Athena Controls, Inc.
Table of
Contents
For information and
instructions related to
basic operations, refer
to the Series C
operator’s manual
supplied with your
controller.
Options Wiring Diagrams
Dual Alarm Outputs (Options #10 and #22) 1
Dual Open Collector Alarms (Option #20) 2
Dual 24 Volt DC Alarm Outputs (Option #21) 3
Relay, N.O. Alarm Output (Option #23) 4
RS-232 Communications (Option #30) 5
RS-485 Communications (Option #31) 6
Contact/Digital Input with Alarm
(Options #40, #41, #42) 7
Transducer Excitation (Options #50, #51,
#52, #53) 8
Auxiliary Output (Options #60, #61, #62, #63) 9
Remote Analog Setpoint (Options #80, #81,
#82, #83, #84) 10
Guide to Digital Communications
Remote Communications Options 12
Athena+ Protocol 14
- Message Format 15
- Sample Commands 19
- Request Messages 21
- Response Messages 24
- Communications Parameter List 27
- Auxiliary Commands 31
- Communications Error Codes 34
1
Dual Alarm
Outputs
Option #10: Dual Alarm Output, N.O.
Option #22: Dual Alarm Output, N.C.
This optional hardware module provides two alarm drive outputs. LED indicators A1 and A2
are used to indicate alarm conditions as configured in the Alarm Menu.
Option Description:
Option 10: Dual alarm, N.O.
Option 22: Dual alarm, N.C. (Note: NC only when power
is applied to unit; otherwise NO)
Load Limits:
Max. Load Current 1 A rms
Min. Load Current 0.5 mA rms
Power Factor Range 0.2 to 1.0 (can drive small
motors, solenoids, valves, and
contactors)
Max. Surge Current
Non-repeating for 1 second 7.5 A
Max. I2T for fusing (0.01 sec) 4.5 amp-squared seconds (1 A -
ABC1 typical fuse)
2
Option #20: Dual Open Collectors, NPN, Isolated
with Clamping Diode
Dual Open
Collector Alarms
Option Description: Dual open collectors, NPN, isolated, with clamping
diode
Recommended operating conditions:
Supply Voltage Pins 13 & 14; 200 working Vdc max. (Never exceed
300 Vdc)
Collector Current 50 mA max.
Specifications:
Saturation Voltage 0.3 Vdc min.
1.2 V max.
Collector-Emitter
Breakdown 300 V min.
Isolation Isolation 300 volts ac/dc output-to-output or output-
to-controller
3
Dual 24 Vdc
Alarm Outputs
Option #21: Dual 24 Vdc Alarm Outputs
Option Description: Dual 24 V outputs with clamping diodes
Pins 13 & 7 are connected internally
Source current is limited to 25 mA (1000 ohm
resistor)
Open circuit voltage is 25 volts
Isolation: Isolation 300 volts ac/dc either output to
instrument
4
Tungsten Lamp, 360 W 120 Vac
Option Description: NO (Normally open) relay contact is closed when
either alarm is active. Jumpers on the board can be
removed to activate the output for a single alarm only:
JP1 - Alarm A1
JP2 - Alarm A2
The relay life is greater than 100,000 operations at 5 operations per second switching full load.
*
Connect load and supply voltage per the following table:
Relay, N.O.
Alarm Output
Option #23: Relay, N.O. Alarm Output
Load Type 5 Amp Voltage Limit
Resistive DC 30 Vdc
Inductive DC (L/R = 7 ms) 20 Vdc
Resistive AC 250 Vac
Inductive AC (pF = 0.4) 150 Vac
Motor, AC, 1/6 hp 250 Vac
*
*
5
RS-232
Communications
Option #30: RS-232 (one-to-one) Communications
Option Description: Provides a one-to-one connection between
the controller and an RS-232 port.
Computers, PLCs, or dumb terminals may
be used to set and access controller data.
6
RS-485
Communications
Option #31: RS-485 (one-to-many)
Communications
Option Description: Provides one-to-many communications.
If run exceeds 1000 ft., terminate the controller furthest from the computer by connecting a 120-ohm, 1/4-watt resistor between terminals 13 and 14.
*Converter is supplied with a wallplug-mount power transformer.
7
Contact/Digital
Input with Alarm
Option Description: Dual function board (functions unrelated)
a. Output alarm is energized when either A1
or A2 is active.
b. Digital input controls Remote Standby, Ramp-Soak
Run/Hold, OR Second Setpoint Select.
Option 40: Active when switch closed.
Option 41: Active when switch open.
Option 42: Active when 5 V input present
Load Limits:
Max. Load Current: 1 A rms
Min. Load Current: 0.5 mA rms
Power Factor Range: 0.2 to 1.0 (can drive small motors, solenoids, valves,
and contactors)
Max. Surge Current,
Non-Repeating for
1 second: 7.5 A
Max. I2T for fusing (0.01 sec): 4.5 amp-squared secs (1A - ABC1
typical fuse)
Contact/Digital
Input with Alarm
Options #40, #41, #42: Contact/Digital Input with
Alarm
Input Option Menu
8
Transducer
Excitation
Option #50, #51, #52, #53: Transducer Excitation
Option Description: The transducer excitation option provides power to
remote transducers. The transducer outputs, in turn, provide a signal to the controller input which can be scaled
in the appropriate engineering units.
Option 50: 10 Vdc
Option 51: 12 Vdc
Option 52: 15 Vdc
Option 53: 5 Vdc
All options will provide at least 20 mA. The transducer circuitry is thermally protected
from short circuits.
9
Auxiliary Output
Option #60, #61, #62, #63: Auxiliary Output
Auxiliary Output
Input Option Menu
Option #60, #61, #62, #63: Auxiliary Output
Option Description: The Setpoint Variable or Process Variable is
transmitted to a remote device (chart recorders, indicators, data recorders, computers, process
controllers, etc.) with 1 of 4 different interfaces:
Option 60: 4-20 mA
Option 61: 1-5 V
Option 62: 0-20 mA
Option 63: 0-5 V
The output signal is scalable in the Auxiliary Output Menu. Multiple remote indicators
may be driven by the controller. However, current and voltage outputs cannot be used
simultaneously.
For current (mA) options, the remote indicators are connected in series. The sum of
the input resistance for all remote indicators must be less than 400 ohms. For voltage
options, the remote indicators are connected in parallel.
The sum of the currents for all remote indicators must be less than 10 mA.
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