Red Lion GEMINI 2 - Manual (Page 42)

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 maximum
3. SENSOR POWER: +12 VDC (±25%) @ 100 mA.
4. MEMORY: Non-volatile E 2 PROM memory retains all programming
information and count value when power is removed or interrupted.
5. INPUTS A AND B: Switch selectable to accept count 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 KW pull-down load for sensor with
current sourcing outputs. (Max. input voltage = 28 VDC @ 7 mA.)
Current Sinking - Unit provides 7.8 KW pull-up load for sensors with current
sinking outputs. (Max. sensor current = 1.6 mA.)
Debounce - Damping capacitor provided for switch contact debounce. Limits
count rate to 100 Hz max. With 50% duty cycle.
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.
6. MAGNETIC PICKUP INPUT:
Sensitivity - 150 mV peak nominal
Hysteresis - 100 mV nominal
Input impedance - 26.5 KW @ 60 Hz nominal
Maximum Input Voltage - ±50 Vp
7. MAXIMUM COUNT RATES:
Uni or Bi-Directional Modes - 9 KHz, 8 KHz (X2)
2-Input Anti-Coincidence Modes - 5 KHz, 4 KHz (X2)
Quadrature Modes - 5 KHz (X1), 4 KHz (X2 or X4)
Rate Indicator Version - 10 KHz, 8 KHz (X2)
8. CONTROL INPUTS:
Reset - Active low (V
IL
= 1.5 V max.), internally pulled up to +12 VDC (I
SNK
=
3 mA), 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 - (GEM 2 only) Active low (V
IL
= 1.5 V max.), internally
pulled up to +5 VDC (I
SNK
= 1 mA).
9. SERIAL COMMUNICATIONS (Optional Gemini 2000 only):
Type - Bi-directional 20 mA current loop, 20 mA source provided. (Powers up
to 7 units in a loop with internal current source.)
Baud Rate - Programmable 300 to 2400.
Maximum Address - 16 units (0 to 15). (Actual number in a single loop is
limited by serial hardware specifications.)
Data Format - 10 bit frame, Odd parity (one start bit, 7 data bits, one odd parity
bit, and one stop bit.)
–40–
Note: Mounted units require a clearance of 6.8" (W) behind the panel.
DIMENSIONS In Inches (mm)