Omega Products PTC900-GN-LV User Manual

M-127

1

⁄8 DIN Panel-Mount

Programmable Timer

The PTC900 timer and PTC901
clock/timer offer many features and
performance capabilities that suit a
wide range of industrial applications.
Both can function as an elapsed
timer or preset timer, while the
PTC901 also offers real-time clock
with date capability. The plug-in
option cards allow the user to
configure the meter for the present
application, while providing easy
upgrades for future needs. Both
models can function as an elapsed­time indicator. By using 2 separate
signal inputs and 23 selectable
timer ranges, the meters can be
programmed to meet most any
timing application. With the addition
of a plug-in setpoint output card,
they can easily become a dual or
quad output preset timer. The
PTC901 can also operate as a real­time clock with the real-time clock
card already installed.

PTC900/PTC901 Series

Starts at

$

169

⻬1⁄8 DIN (50 x 97 mm)
⻬ 6-Digit, 14.2 mm (0.56")

LED Display

⻬ Green Display or Red,

Sunlight-Readable
Display

⻬ Elapsed Timer with

Preset Capability

⻬ Counter with

Preset Capability

⻬ Cycle Counting

Capability

⻬ Programmable Function

Keys and User Inputs

⻬ 4 Setpoint

Alarm Outputs

⻬ Communications and

Bus Capabilities

⻬ PC Software Available

for Meter Configuration

⻬ NEMA 4X (IP65)

The meters are capable of
displaying time in 12- or 24-hour
time formats. The 12-hour format
can be displayed in hours and
minutes, with or without an am/pm
indication or in hours, minutes, and
seconds. The 24-hour format can be
displayed in hours and minutes or in
hours, minutes, and seconds.

The PTC901 also has a calendar
display in which the day, month
and/or year can be displayed. The
meter will recognize leap years, and
can automatically adjust for Daylight
Savings time. If the application calls
simultaneously for a preset timer
and a real-time clock, the PTC901
can handle this requirement as well.
A battery-backed real-time clock
plug-in card is provided with the
PTC901. This card, which includes
a lithium coin-cell battery, will
maintain the time and date when
main power is removed.

The meters accept inputs from a
variety of sources, including switch
contacts and outputs from CMOS or
TTL circuits. The input can be
configured to trigger on the edge or
level of the incoming pulse. Internal
jumpers are available for selecting
sinking inputs (active-low) or

sourcing inputs (active-high). The
front panel keys and three user
inputs are programmable to perform
various meter functions. The meters
can have up to 4 setpoint outputs,
determined by the optional plug-in
cards. The setpoint plug-in cards
provide dual form “C” relays (5A),
quad form “A” relays (3A) or either
quad-sinking or quad-sourcing open
collector logic outputs. The outputs
can be assigned to the timer,
counter, RTC date, and RTC
time. The outputs can also be
independently configured to suit
a variety of control and alarm
requirements.

Plug-in cards can also provide serial
communications. These include
RS232, RS485 and MODBUS

®

.
Display values, setpoint alarm
values and setpoint states can be
controlled through serial
communications. Once the meters
have been initially configured, the
parameter list may be locked out
from further modification entirely, or
the setpoint, timer start/stop values,
counter start/stop values, RTC time
“set”, and display intensity can be
made accessible. Lockouts are
activated through a security code or
user input.

PTC901, $211, shown
smaller than actual size.

PTC901 case and
mechanics, shown
smaller than
actual size.

Panel punches

available, visit

omega.com/

panelpunches

M-128

M

Specifications

Display: 6-digit, 14.2 mm (0.56") red

sunlight-readable or standard green LED

Power:

AC Versions:

AC Power: 85 to 250 Vac,

50/60 Hz, 18 VA
Isolation: 2300 Vrms for 1 min to

all inputs and outputs;
300V working

DC Versions:

DC Power: 11 to 36 Vdc, 14 W

(derate operating temperature to
40°C (104°F) if operating <15 Vdc
and 3 plug-in cards are installed)

AC Power: 24 Vac, ± 10%, 50/60 Hz,
15 VA

Isolation: 500 Vrms for 1 min to all
inputs and outputs (50V working)

Sensor Power: 12 Vdc, ±10%, 100 mA
max; short circuit protected

Keypad: 3 programmable function keys,
5 keys total

Timer Display

Timer Range: 23 selectable ranges
Timing Accuracy: ± 0.01%
Minimum Digit Resolution: 0.001 s
Maximum Least Significant Digit

Resolution: 1 hr
Maximum Display: 999999

Current Sinking (Active-Low): V

il

=

0.9 V max, 22 KW pull-up to 12 Vdc
Current-Sourcing (Active-High): V

ih

=

3.6 V min, 22 KW pull-down, max

Continuous Input: 30 Vdc
Timer Input Pulse Width: 1 ms minimum
Timer Start/Stop Response Time:

1 ms max
Filter: Software filtering provided for

switch contact debounce; filter enabled
or disabled through programming; if
enabled, filter results in 50 ms start/stop
response time for successive pulses on
the same input terminal

User Inputs

Type: 3 programmable user inputs; logic

inputs configurable as current-sinking
(active-low) or current-sourcing (active­high) through a single plug jumper

Current Sinking (Active-Low):

V

il

= 0.9V max, 22 KΩ pull-up to 12 Vdc

Current-Sourcing (Active-High):

V

ih

= 3.6V min, 22 KΩ pull-down, max

Continuous Input: 30 Vdc
Isolation To Timer Input Common:

Not isolated

Response Time: 10 ms
Memory: Non-volatile E

2

PROM retains
all programming parameters and
display values

Cycle Counter Display:

Counter Range: 0 to 999999
Digit Resolution: 1 cycle
Maximum Count Rate: 50 Hz

Real-Time/Date Display (PTC901):

Real-Time Display: 5 display formats—

hr/min/second (12 or 24 hr format),
hr/min (24 hr), hr/min (12 hr with or
without AM/PM indication)

Date Display: 7 display formats—
month/day or day/month (numeric or
3-letter month format), month/day/year
or day/month/year (all numeric), day of
week/day (3-letter day of week format)

Real-Time Clock Card:

Field-replaceable plug-in card
Time Accuracy: ± 5 s/month (1 min/year)

with end-user calibration

Battery: Lithium 2025 coin cell
Battery Life Expectancy: 10 years, typical
Synchronization Interface: 2-wire

multi-drop network (RS485 hardware),
32 units max, operates up to 4000'

Isolation To Timer and User Input
Commons: 500 Vrms for 1 min

Working Voltage: 50V, not isolated

from all other commons.

Timer Inputs A and B

Type: Logic inputs configurable as current-

sinking (active-low) or curren-sourcing
(active-high) via a single plug jumper

Dimensions: mm (in)

96.5

(3.80)

49.5

(1.95)

2.5

(0.10)

104.1
(4.10)

44.5

(1.75)

91.4

(3.60)

44.5

(1.75)