16. SERIAL COMMUNICATIONS (Optional):
Isolation To Signal Input Common: 500 Vrms for 1 min.
Working Voltage: 50 V max., CAT I
Not isolated from all other commons.
Type: Bi-directional 20 mA current loop, 20 mA source provided on
transmit loop. (Powers up to 7 units in a loop with internal current source.)
Baud Rate: programmable 300 to 2400
Maximum address: 99 (Actual number in a single loop is limited by serial
hardware specifications.)
Data Format: 10 bit frame, Odd parity (one start bit, 7 data bit, one odd
parity bit, and one stop bit.)
Serial Hardware Specifications:
SO - Output Transistor
Rating: V
max
= 30 VDC, V
SAT
=1V
MAX
@20mA.
Note: This will allow up to 28 units max. in each loop.
SI - Input Diode Rating: VF = 1.25 V
TYP
; 1.5 V
MAX
Note: The compliance voltage rating of the source must be greater than
the sum of the voltage drops around the loop. (Typically a 30 VDC
powered source would be capable of operating between 18 and 22
units in a loop.)
17. ALARMS (Optional):
Solid State: Two, isolated, sinking open collector NPN transistors acting in
parallel with relays. Imax: 100 mA. V
SAT
=1V@100mAmax. V
MAX
= 30 VDC.
Isolation To Signal Input Common: 500 Vrms for 1 min.
Working Voltage: 50 V max., CAT I
Not isolated from all other commons.
Relays: Form C (2)
Isolation To Signal Input Common: 2300 Vrms for 1 min.
Working Voltage: 300 V max., CATII
Max. Rating: 5 Amps @ 120/240 VAC or 28 VDC
(resistive load), 1/8 hp @ 120 VAC (inductive load).
Relay Life Expectancy: 100,000 cycles at max. rating.
(As load level decreases, life expectancy increases.)
18. ANALOG OUTPUT (Optional): Digital scaling and offsetting.
Isolation To Signal Input Common: 500 Vrms for 1 min.Working
Working Voltage: 50 V max., CAT I
Not isolated from all other commons.
4to20mA:
Accuracy: 0.1% of full scale
Resolution: 12 bits
Compliance Voltage: 10 VDC (500 W max. loop impedance)
0 to 10 VDC:
Accuracy: ±(0.1% of reading + 35 mV)
Resolution: 12 bits
Min. Load Resistance: 10 KW (1 mA max.)
19. LINEARIZER/PEAK/VALLEY/TARE (Optional):
9-segment multiple slope scaling for non-linear inputs. Peak and Valley
recording. Signal re-zero (tare).
20. CERTIFICATIONS AND COMPLIANCES:
SAFETY
UL Recognized Component, File #E186643, UL3111-1, CSA 22.2, No.
1010-1
Recognized to U.S. and Canadian requirements under the Component
Recognition program of Underwriters Laboratories, Inc.
Type 4 Enclosure rating (Face only), UL50
IECEE CB Scheme Test Certificate # UL2530-186643/USA,
CB Scheme Test Report #97RT10472-082198
Issued to Underwriters Laboratories, Inc.
IEC 1010-1, EN 61010-1: Safety requirements for electrical equipment
for measurement, control, and laboratory use, Part 1.
IP65 Enclosure rating (Face only), IEC 529
-43-