Time Mark 660 Data Sheet
_
+
4-20
INPUT
ma
+
_
24 VDC
HIGH ALARM
LOW ALARM
4
5
6
7
8
9
10
11
1
2
3
2.88”
2.44”
1.75”
3.52”
MODEL 660
TIME MARK is a division of
Trip Control
Automatic reset
Adjustable trip points
Adjustable dead band
5-Year unconditional warranty
DESCRIPTION
The Model 660 Trip Control, part of the 600 series line of
instrumentation controls, is designed to monitor and maintain
a set level on a measurable variable, such as liquid level,
temperature, pressure, flow, etc. A user-provided 4-20ma
current loop represents the measurable application.
Two trip points, the rising setpoint, and the falling setpoint are
field adjustable. They are set by calibrating the DEAD BAND
and TRIP adjustments. If the input is between the two setpoints, the relays are de-energized. If the input goes above
the rising setpoint, the RISING TRIP relay energizes to
provide a tripped condition. This tripped condition will
automatically reset when the input falls back below the
setpoint. If the input falls below the falling setpoint the
FALLING TRIP relay energizes to provide a tripped condition.
The tripped condition resets when the input rises back above
the setpoint.
The Model 660 has top-mounted LEDs for status indication.
Individual RISING TRIP or FALLING TRIP LEDs turn ON in a
tripped condition. The INPUT LOOP ERROR LED turns ON if
the input is outside the 4-20ma range.
A Time Mark Model 650 Loop Power Supply (or equivalent)
is required to provide DC operating voltage. A Time Mark
Model 672-15 Pressure Transducer (or equivalent) is
required to provide the input signal.
SPECIFICATIONS
Model 660
Operating voltage 24VDC ±5%
Supply current 30mA maximum
Input signal 4-20mA
Input resistance 50W
Input loop error High: 23 - 25mA
Trip adjustment 4 - 20mA
Dead band adjustment 1 - 10%
Hysteresis
Contact 10 amps at 240VAC resistive
Operating temperature -13º to +122º F
Expected relay life Mechanical: 10 million operations
Humidity tolerance 0-97% w/o condensation
Enclosure material ABS plastic
Weight 6 oz.
Mounting 11-pin socket (*order separately)
*order 11-pin socket number 51X016
Rising trip point: 0.9% at midrange
Falling trip point: 0.4% at midrange
Electrical: 100,000 at rated load
PIN DRAWING
DIMENSIONS
01/2012
© 2012 TIME MARK CORPORATION
0
2
4
6
8
10
14
16
18
20
12
LOW TRIP POINT
HIGH TRIP POINT
TIME (MINUTES)
I
L
o
o
p
(
m
a
)
HIGH ALARM RELAY DE-ENERGIZES
HIGH ALARM RELAY ENERGIZES
LOW ALARM RELAY DE-ENERGIZES
LOW ALARM RELAY ENERGIZES
TIME MARK is a division of
MODEL 660
Trip Control
READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.
KEEP THIS DATA SHEET FOR FUTURE REFERENCE.
INSTALLATION
Connect 24 VDC power to pins 1 and 3 on the 11-pin socket.
Connect the 4-20ma input signal to pins 4 and 5.
Connect the other pins to the appropriate units in your loop
system, following the base diagram shown on the Model 660
device (and on this data sheet).
NOTE: When installing the Model 660 Trip Control in areas of
high humidity or contamination, it is recommended that the base
area and all exposed metal parts of the socket be coated liberally
with a good quality silicon grease, such as Dow Corning DC-4 or
DC-4X. Insert the unit into the socket and wipe off excess grease
around the base. This will prevent the entrance of moisture and
other contaminates into the base and socket areas.
ADJUSTMENT PROCEDURE
The Model 660 Trip Control relays are normally de-energized
when the input is between the trip points. If the input rises
above the RISING TRIP point, or falls below the FALLING
TRIP trip point, the high or low relay will energize. Either way,
the relay returns to the de-energized state when the input
signal is again between the two setpoints (see the
OPERATION DIAGRAM).
The RISING TRIP and FALLING TRIP LEDs may be used to
indicate the tripped condition in the following adjustments.
BEFORE ADJUSTMENT: It is necessary to determine the
TRIP setpoint before adjustment of the Model 660. In order to
determine this setpoint, you must know the RISING TRIP, and
the FALLING TRIP setpoints in milliamps, for your application,
in order to calculate the TRIP setpoint. It is determined by
averaging these two setpoints.
The DEADBAND is also required. This value is expressed as
a percent, determined as shown:
TRIP
NOTE: The DEADBAND value must be in the range of 1-
10%. If it is not, contact the factory for special instructions.
GENERAL SAFETY
THE MODEL 660 TRIP CONTROL IS NOT TO BE USED WITH INPUT VOLTAGES OTHER THAN 24VDC.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
TRIP POINT: Turn the DEADBAND adjustment fully counter-
clockwise, to it’s lowest setting. With the Model 680 4-20ma
Simulator (or other adjustable, known signal source), apply
the current level for the TRIP (as calculated in the previous
step). Adjust the TRIP pot until both the RISING TRIP and the
FALLING TRIP LEDs are off.
DEADBAND: With the DEADBAND still at it’s lowest setting,
Pay careful attention to polarity.
TRIP = (RISING TRIP + FALLING TRIP) 2
DEADBAND = RISING TRIP - TRIP x 100
apply the current level for the RISING TRIP. Turn the
DEADBAND slowly clockwise, until the RISING TRIP LED
goes off. Then turn it slowly counter-clockwise, until the
RISING TRIP LED comes on. You can check the RISING
TRIP and FALLING TRIP setpoints by varying the input
current, and noting where the relays trip.
INPUT LOOP ERROR: Check the INPUT LOOP ERROR
function by applying current levels above and below the 420ma range. The INPUT LOOP ERROR LED should
illuminate when the current is above 20ma or below 4 ma.
WARRANTY
This product is warranted to be free from defects in materials
and workmanship, and is covered by our exclusive 5-year
Unconditional Warranty. Should this device fail to operate
for any reason, we will repair it for five years from the date of
manufacture. For complete warranty details, see the Terms
and Conditions of Sales page in the front section of the Time
Mark catalog or contact Time Mark at 1-800-862-2875.
OPERATION DIAGRAM
© 2012 TIME MARK CORPORATION
01/2012
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