APPENDIX “B” - SPECIFICATIONS & DIMENSIONS
1. DISPLAY: 6-digit 0.56" (14.2 mm) High LED display.
2. POWER REQUIREMENTS:
AC Power: Switch selectable 115/230 VAC (±10%), 50/60 Hz, 20 VA
DC Power: 11 to 14 VDC @ 0.7 amp max.
3. SENSOR POWER: +12 VDC (±25%) @ 100 mA.
4. MEMORY: Non-volatile E
2
PROM memory retains all programming
information when power is removed or interrupted.
Power Cycles (ON/OFF): 100,000 min.
Data Retention: 10 yrs. min.
5. INPUTS A AND B: Switch selectable to accept pulses from a variety of
sources including switch contacts, outputs from CMOS or TTL circuits, and
all standard RLC sensors.
Current Sourcing - Unit provides 3.9 K pull-down resistor for sensor with
current sourcing outputs. (Max. input voltage = 28 VDC @ 7 mA.)
Current Sinking - Unit provides 7.8 K pull-up resistor for sensors with
current sinking outputs. (Max. sensor current = 1.6 mA.)
Debounce - Damping capacitor provided for switch contact debounce. Limits
rate to 100 Hz max. and input pulse widths to 5 msec. min.
Lo Bias - Input trigger levels V
IL
= 1.5 V, V
IH
= 3.75 V
Hi Bias - Input trigger levels V
IL
= 5.5 V, V
IH
= 7.5 V
Note: Bias levels given are ±10% @ 12 VDC. They vary proportionally with
sensor supply voltage at “DC OUT” terminal.
6. MAGNETIC PICKUP INPUTS A & B:
Sensitivity: 150 mV peak (typical @ 12 VDC)
Hysteresis: 100 mV
Input impedance: 26.5 K
W
@ 60 Hz
Maximum Input Voltage: ±50 Vp
7. RATE ACCURACY AND REPEATABILITY: +0.025%
8. RATE MINIMUM INPUT FREQUENCY: 0.03 Hz
Note: At frequencies below 0.03 Hz (1 pulse every 32 sec.) the rate indicator
will display a zero.
9. RATE MAXIMUM INPUT FREQUENCY: 10 KHz
10. CONTROL INPUTS:
Reset - Active low (V
IL
= 1.5 V max.), internally pulled up to +12 VDC (I
SNK
=
3 mA), Activation & De-activation response time = 10 msec.
Program Disable - Active low (V
IL
= 1.5 V max.), internally pulled up to +5
VDC (I
SNK
= 1 mA).
Print Request - (GEM521xx only) Active low, (V
IL
= 1.5 V max.), internally
pulled up to +5 VDC (I
SNK
= 1 mA).
Note: Mounted units require a clearance of 6.8" (W) behind the panel.
DIMENSIONS In Inches (mm)
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
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