Trumeter 7922 Counter modules 79 series Assembly dimensions 45 x 45 mm 7922 数据表
产品代码
7922
Specification
Display
Black on green STN LCD, with yellow/green LED
backlight.
Program Storage
Erase/write cycles:1,000,000
Life: 40 years min
Count Range
-99999 to 999999
Count Pre-scaler
Multiplier 0.00250 to 9.99999
Divider 1 to 99999
External Reset response time
Max 2ms
Count Inputs
High Speed: 10kHz max (electronic)
(Dividing prescaler: 7kHz max)
Duty cycle: 60:40 max
Low Speed: 30Hz max (contact closure)
Relay Contacts
5A resistive load 100,000 operations
2A resistive load 1,000,000 operations
Reaction time: <20ms.
P1 Relay: UL Ratings
AC 250V max, DC 125V max
250VAC 1/6 HP
30VDC 5A
P1 Relay: General ratings
AC 1250VA max 300V AC
250Vac (cosø =1): 5A
250Vac (cosø =0.4): 3A
DC 150W max 220V DC
30Vdc: 5A
P2 Relay: UL Ratings
AC 250V max, DC 125V max
250VAC 1/6 HP
30VDC 5A
P2 Relay: General ratings
AC 2000VA max 300V AC
250Vac (cosø =1): 8A
250Vac (cosø =0.4): 5A
DC 150W max 220V DC
30Vdc: 5A
Supply (see Connections)
94 to 240V AC ± 10% 50/60Hz
VA Rating 4VA
or 12 to 24VDC ± 10%
typical current 100mA DC (max)
Installation Category (IEC 664)
Overvoltage category II
(Pollution degree 2)
Operating temperature
-10°C to +60°C
Storage temperature
-20°C to +70°C
Environmental protection
IP65 (panel mounting) using the sealing gasket
supplied (without Screw-fixed bezel). If the seal is
removed, it must be replaced with a new one.
See page 39 for cut-out dimensions
Altitude
Up to 2000m
Relative Humidity
80% max up to 31°C, decreasing to 50% max at
40°C
The front panel buttons are used to program the counter and to display and set the P1
and P2 presets. All the buttons can be disabled by the Keyboard Inhibit input. (see
Programming, page 6).
Auto Reset (see
and
on page 35)
When Auto Reset is on, the counter will be automatically reset as follows:
In Reset to Zero mode, the counter will reset to zero when P1 is reached.
In Reset to Zero mode, the counter will reset to zero when P1 is reached.
In Reset to P1 mode, the counter will reset to P1 when zero is reached.
Front Panel Reset and External Reset (RST / Ext. Reset)
A Reset can be caused by pressing the RST button or by applying a signal to the
External Reset input. Any active relay will be returned to its normal condition.
If the operation of the External Reset is safety critical, it is recommended that the External
If the operation of the External Reset is safety critical, it is recommended that the External
Reset signal is derived from an independent power supply which will remain stable if the
7922’s supply is interrupted.
P1 and P2 Presets
The minimum value possible for P1 and P2 is 000001,except in Dual Preset
mode, when P2 can be set to zero. P1 and P2 must be greater than any
3
1
2
The Front Panel
Count
P1 or P2 or
Batch Total
Batch Total
Digit 1
Multiplying Prescaler
Dividing Prescaler
Dividing Prescaler
Select
Program
Reset
P1 Relay state
P2 Relay operated
P1 Relay operated
Digit 6